SECURITY FIRST TECHNOLOGIES CORP
8-K, 1999-09-23
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 8-K
                                 CURRENT REPORT


                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934



     Date of Report (Date of earliest event reported): September 21, 1999


                    SECURITY FIRST TECHNOLOGIES CORPORATION
            ------------------------------------------------------
            (Exact name of registrant as specified in its charter)



           DELAWARE                  000-24931                58-2395199
           --------                  ---------                ----------
 (State or other jurisdiction       (Commission              (IRS Employer
       of incorporation)            File Number)           Identification No.)



       3390 PEACHTREE  ROAD, NE, SUITE 1700,  ATLANTA, GEORGIA 30326
       -------------------------------------------------------------
                    (Address of principal executive offices)



       Registrant's telephone number, including area code: (404) 812-6200
                                                           --------------

                                 NOT APPLICABLE
          -------------------------------------------------------------
          (Former name or former address, if changed since last report)

<PAGE>



ITEM 5.  OTHER EVENTS.

                   On  September   22,   1999,   Security   First   Technologies
Corporation, or S1, announced, in a press release attached as Exhibit 99.1, that
it had entered into new  agreements  for its Belgian  subsidiary to acquire FICS
Group, N.V. In doing so, that certain Share Purchase Agreement,  dated as of May
16,  1999,  entered  into by and  among S1  Europe  Holdings  N.V.,  each of the
stockholders  and  bondholders  of FICS Group N.V.  listed on the signature page
thereto,  and for the limited  purposes stated therein,  S1 and FICS Group N.V.,
and that certain Stock  Purchase  Agreement,  dated as of May 16, 1999,  entered
into by and among S1, the individuals  identified on Schedule 1 thereto and FICS
Group N.V. (for the limited  purposes set forth in Section 5 and Section  6.3(b)
thereof) were both terminated.

                   The new  agreements  include a Share  Purchase  Agreement II,
dated as of  September  21, 1999,  entered into by and among S1 Europe  Holdings
N.V., each of the  stockholders of FICS Group N.V. who are signatories  thereto,
and as may be  joined  by other  stockholders  from  time to  time,  and for the
limited  purposes  stated therein,  S1 and FICS Group N.V., and a Stock Purchase
Agreement II, dated as of September 21, 1999,  entered into by and among S1, the
individuals  and entities who are signatories  thereto,  and as may be joined by
other  individuals and entities from time to time, and FICS Group N.V., (for the
limited  purposes  set forth in Section 5 and  Section  6.3(b)  thereof).  These
documents are attached as Exhibits 2.1 and 10.1 respectively.


<PAGE>

ITEM 7.           FINANCIAL STATEMENTS AND EXHIBITS.

(a)      Not applicable.

(b)      Not applicable.

(c)      Exhibits.



         EXHIBIT
           NO.             DESCRIPTION
           ---             -----------

        2.1                Share  Purchase  Agreement  II by and among S1 Europe
                           Holdings N.V., a Belgian corporation and a subsidiary
                           of  Security  First  Technologies  Corporation,   the
                           stockholders  of FICS Group N.V. who are  signatories
                           thereto,  and as may be joined by other  stockholders
                           from  time to  time,  and for  the  limited  purposes
                           therein,  Security First Technologies Corporation and
                           FICS Group N.V., dated September 21, 1999.

        10.1               Stock  Purchase  Agreement  II by and among  Security
                           First Technologies  Corporation,  the individuals and
                           entities who are signatories  thereto,  and as may be
                           joined by other individuals and entities from time to
                           time,  and FICS Group N.V.  for the limited  purposes
                           set forth therein, dated September 21, 1999.

        99.1               Press Release dated September 22, 1999.

<PAGE>


                                   SIGNATURES

                   Pursuant to the  requirements of the Securities  Exchange Act
of 1934,  the  registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.

                                    SECURITY FIRST TECHNOLOGIES CORPORATION
                                    (Registrant)

                                    /s/Robert F. Stockwell
                                    ---------------------------------------
                                    Robert F. Stockwell
                                    Chief Financial Officer and Treasurer




Date: September 22, 1999

<PAGE>


                                  EXHIBIT INDEX



         Exhibit
         No.               Description
         ---               -----------


        2.1                Share  Purchase  Agreement  II by and among S1 Europe
                           Holdings N.V., a Belgian corporation and a subsidiary
                           of  Security  First  Technologies  Corporation,   the
                           stockholders  of FICS Group N.V. who are  signatories
                           thereto,  and as may be joined by other  stockholders
                           from  time to  time,  and for  the  limited  purposes
                           therein,  Security First Technologies Corporation and
                           FICS Group N.V., dated September 21, 1999.

        10.1               Stock  Purchase  Agreement  II by and among  Security
                           First Technologies  Corporation,  the individuals and
                           entities who are signatories  thereto,  and as may be
                           joined by other individuals and entities from time to
                           time,  and FICS Group N.V.  for the limited  purposes
                           set forth therein, dated September 21, 1999.

        99.1               Press Release dated September 22, 1999.



                                                                     EXHIBIT 2.1





                           SHARE PURCHASE AGREEMENT II

                                  by and among

                             S1 EUROPE HOLDINGS N.V.

                                       and

                               THE STOCKHOLDERS OF
                                 FICS GROUP N.V.
                           WHO ARE SIGNATORIES HERETO,

                   and for the limited purposes stated herein

                     SECURITY FIRST TECHNOLOGIES CORPORATION

                                       and

                                 FICS GROUP N.V.





                                   DATED AS OF

                               SEPTEMBER 21, 1999


<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                  Page
                                                                                  -----
<S>        <C>                                                                   <C>
ARTICLE I  THE TRANSACTION..........................................................1
      1.1.     The Transaction......................................................1
      1.2.     Closing..............................................................2
      1.3.     Purchase Amount......................................................2
      1.4.     FICS Securities Transfers............................................4
      1.5.     Deliveries at Closing................................................4
ARTICLE II REPRESENTATIONS AND WARRANTIES OF THE SELLERS............................6
      2.1.     Organization of Sellers..............................................7
      2.2.     Authorization of Transaction.........................................7
      2.3.     Noncontravention.....................................................8
      2.4.     Broker's Fees........................................................8
      2.5.     FICS Securities......................................................8
      2.6.     Absence of Bankruptcy Proceedings....................................8
ARTICLE III REPRESENTATIONS AND WARRANTIES OF FICS..................................9
      3.1.     Corporate Organization...............................................9
      3.2.     Capitalization.......................................................10
      3.3.     Authority; No Violation..............................................10
      3.4.     Consents and Approvals...............................................11
      3.5.     Financial Statements; Books and Records..............................11
      3.6.     Broker's Fees........................................................12
      3.7.     Absence of Certain Changes or Events.................................12
      3.8.     Legal Proceedings....................................................13
      3.9.     Taxes and Tax Returns................................................13
      3.10.    Employee Plans.......................................................15
      3.11.    Employees............................................................16
      3.12.    Certain Contracts....................................................16
      3.13.    Environmental Matters................................................17
      3.14.    Properties and Assets................................................18
      3.15.    Insurance............................................................19
      3.16.    Compliance with Applicable Laws......................................19
      3.17.    FICS Information.....................................................19
      3.18.    Intellectual Property................................................20
      3.19.    Delivery of FICS Stock Transfer Book.................................23
ARTICLE IV REPRESENTATIONS AND WARRANTIES OF S1 HOLDINGS AND S1.....................23
      4.1.     Corporate Organization...............................................23
      4.2.     Authority; No Violation..............................................24
      4.3.     Consents and Approvals...............................................25
ARTICLE V COVENANTS RELATING TO CONDUCT OF BUSINESS.................................25
      5.1.     Covenants relating to FICS...........................................25
</TABLE>


                                       i

<PAGE>

<TABLE>
<CAPTION>
                                                                                  Page
                                                                                  -----
<S>        <C>                                                                   <C>

      5.2.     Covenants of Sellers.................................................28
      5.3.     Covenants of S1......................................................28
      5.4.     Compliance with Antitrust Laws.......................................29
ARTICLE VI ADDITIONAL AGREEMENTS....................................................29
      6.1.     Regulatory Matters...................................................29
      6.2.     Access to Information................................................30
      6.3.     Shareholder Meeting..................................................31
      6.4.     Reserved.............................................................31
      6.5.     FICS Year 2000 Officer...............................................31
      6.6.     Subsequent Interim Financial Statements..............................32
      6.7.     Advice of Changes....................................................32
      6.8.     Current Information..................................................33
      6.9.     Transaction Expenses of FICS.........................................33
      6.10.    Joinder of Additional Sellers........................................33
ARTICLE VII CONDITIONS PRECEDENT....................................................34
      7.1.     Conditions to Each Party's Obligation To Effect the Transaction......34
      7.2.     Conditions to Obligations of S1Holdings..............................35
      7.3.     Conditions to Obligations of the Sellers.............................36
ARTICLE VIII TERMINATION AND AMENDMENT..............................................38
      8.1.     Termination..........................................................38
      8.2.     Effect of Termination................................................39
      8.3.     Amendment............................................................39
      8.4.     Extension; Waiver....................................................39
ARTICLE IX GENERAL PROVISIONS.......................................................40
      9.1.     Expenses.............................................................40
      9.2.     Notices..............................................................40
      9.3.     Interpretation.......................................................41
      9.4.     Counterparts.........................................................42
      9.5.     Entire Agreement.....................................................42
      9.6.     Governing Law........................................................42
      9.7.     Enforcement of Agreement.............................................42
      9.8.     Severability.........................................................42
      9.9.     Publicity............................................................43
      9.10.    Assignment; Limitation of Benefits...................................43
      9.11.    Additional Definitions...............................................43
      9.12.    Survival.............................................................44
      9.13.    Cumulative Remedies..................................................44
      9.14.    Release of Claims....................................................44
ARTICLE X INDEMNIFICATION...........................................................45
ARTICLE X INDEMNIFICATION...........................................................45
      10.1.    Indemnification of the Sellers.......................................45
      10.2.    Claim for Indemnification............................................45
      10.3.    Third Party Claims...................................................45
</TABLE>

<PAGE>

EXHIBITS
                                                                           Page
                                                                           -----

A. Form of S1 Stockholder Agreement

SCHEDULES

A. Schedule of holders of FICS Securities

<PAGE>

                           SHARE PURCHASE AGREEMENT II

         This SHARE PURCHASE  AGREEMENT II, dated as of September 21, 1999 (this
"Agreement"),  is entered into by and among S1 Europe  Holdings  N.V., a Belgian
corporation (naamloze vennootschap ("N.V.")) ("S1 Holdings") and a subsidiary of
Security First Technologies Corporation,  a Delaware corporation ("S1"), each of
the stockholders of FICS Group N.V., a Belgian  corporation  registered with the
Brussels Registry of Commerce under number 515450 ("FICS"),  who are signatories
hereto,  and  as  may  be  joined  by  other  stockholders  from  time  to  time
(individually, a "Seller," and collectively, the "Sellers"), and for the limited
purposes stated herein, S1 and FICS.

         WHEREAS,  the  parties  hereto  and  other  stockholders  of  FICS  had
previously entered into that certain Share Purchase  Agreement,  dated as of May
16,  1999,  by  and  among  S1  Holdings  as  represented  by  S1,  each  of the
stockholders  of  FICS  listed  on  the  signature  page  thereto  (the  "Former
Sellers"), and for the limited purposes stated therein, S1 and FICS (the "Former
Agreement");

         WHEREAS, pursuant to Section 8.1(a) of the Former Agreement the parties
thereto have terminated the Former Agreement as confirmed by that certain letter
agreement from S1 Holdings to the Former Sellers,  S1 and FICS, dated as of even
date herewith;

         WHEREAS,  the  Sellers  own  capital  stock of FICS (the "FICS  Capital
Stock"),  and securities  otherwise  convertible into capital stock of FICS (the
"FICS Stock  Equivalents,"  and  together  with FICS  Capital  Stock,  the "FICS
Securities"), in the name and the amounts set forth on Schedule A; and

         WHEREAS, S1 Holdings and each of the Sellers have determined that it is
in their best  interests to consummate the  transactions  provided for herein in
which,  subject to the terms and conditions  set forth herein,  S1 Holdings will
acquire all of the issued and  outstanding  FICS  Securities in exchange for the
Transaction Consideration as defined in Section 1.3 hereunder;

         NOW,   THEREFORE,   in   consideration   of   the   mutual   covenants,
representations, warranties and agreements contained herein, and intending to be
legally bound hereby, the parties agree as follows:


                                    ARTICLE I
                                 THE TRANSACTION


          1.1. THE TRANSACTION.

         At the Closing (as defined  below at Section  1.2),  and subject to the
terms and conditions of this  Agreement,  the Sellers hereby agree to sell to S1
Holdings,  and S1

<PAGE>


Holdings  hereby agrees to purchase from the Sellers,  the FICS  Securities (the
"Transaction").


          1.2. CLOSING.

         Subject to the terms and conditions of this  Agreement,  the closing of
the Transaction  (the "Closing") will take place at 10:00 a.m. at the offices of
Hogan & Hartson L.L.P., 555 Thirteenth Street, NW, Washington, DC and, as to the
recordation of change of ownership of the FICS Capital Stock,  at the offices of
Hogan & Hartson L.L.P.,  Avenue des Arts 41, 1040 Brussels,  Belgium, on (i) the
fifth  business  day after  the  latest to occur of (x) the date the last of any
required  governmental  or regulatory  approvals is received and all  applicable
statutory or regulatory waiting periods have expired or been terminated, and (y)
the date on which the approval of S1's  stockholders  is obtained,  or (ii) such
other date, place and time as the parties may reasonably determine (the "Closing
Date").  Notwithstanding the foregoing,  any of Michel Akkermans  ("Akkermans"),
General Atlantic  Partners 20, L.P., GAP Coinvestment  Partners,  L.P.,  General
Atlantic Partners 52, L.P., or GIMV N.V. (together the "Majority  Sellers"),  or
S1  Holdings,  may extend the Closing  Date by up to 90 days (but not later than
March 31, 2000) if, in the case of S1 Holdings,  any of the conditions set forth
at Sections 7.1 and 7.2 are not met as of the date which would  otherwise be the
Closing  Date under the  preceding  sentence,  and, in the case of the  Majority
Sellers,  if any of the conditions set forth at Sections 7.1 and 7.3 are not met
as of the date which would  otherwise  be the Closing  Date under the  preceding
sentence.

          1.3. PURCHASE AMOUNT.

                  (a) At the Closing and subject to the terms and  conditions of
this  Agreement,  S1 Holdings hereby agrees to purchase the FICS Securities that
are issued and outstanding immediately before Closing.

                  (b) In  consideration  for  the  purchase  of all  issued  and
outstanding  FICS Securities as contemplated by the terms of this Agreement,  S1
Holdings hereby agrees to pay an aggregate  amount of cash,  except as set forth
at Section 1.3(c) hereof (the "Transaction  Consideration") at the Closing,  and
to pay additional compensation if applicable, all as follows:

                    (1)  Upon the Closing,  S1 Holdings  shall pay  $357,500,000
                         for all of the FICS Securities (the "Initial Payment");

                    (2)  At a  date  to  be  determined  in  S1  Holding's  sole
                         discretion,  but in any case no later than 30  calendar
                         days following the filing of S1's Annual Report on Form
                         10-K for the fiscal  year 2000  (such date the  "Second
                         Payment  Date") if there is any 2000  Earn-out  Payment
                         (as such term is defined  and  calculated

                                       2

<PAGE>

                         pursuant  to  Schedule  1.3  hereof),  then S1 Holdings
                         shall pay to the  Sellers  an amount  equal to the 2000
                         Earn-out Payment (the "Second Payment"); and

                    (3)  At a  date  to  be  determined  in  S1  Holding's  sole
                         discretion,  but in any case no later than 30  calendar
                         days following the filing of S1's Annual Report on Form
                         10-K for the  fiscal  year 2001  (such  date the "Third
                         Payment  Date",  and together with the Initial  Payment
                         Date and the Second Payment Date, the "Payment  Dates")
                         if there is any 2001 Earn-out  Payment (as such term is
                         defined  and   calculated   pursuant  to  Schedule  1.3
                         hereof),  then S1 Holdings  shall pay to the Sellers an
                         amount equal to the 2001  Earn-out  Payment (the "Third
                         Payment", and together with the Initial Payment and the
                         Second Payment, the "Payments").

The amount of the Transaction Consideration to be paid to each of the Sellers on
each of the Payment Dates shall be determined  by  multiplying  the amount to be
paid at such date by the  percentage  listed next to such  Seller's  name (which
percentage  reflects such Seller's  percentage  ownership of FICS Securities) at
Schedule A hereto and rounded to the nearest whole cent.

                  1.3(c).  Each of the Payments  shall be paid by S1 Holdings in
cash into an escrow account at a bank  designated by S1 Holdings and held solely
for the purpose of  purchasing  shares of common stock of S1, par value $.01 per
share ("S1 Common Stock"), if S1 Holdings is able to arrange or is offered third
party  financing for such amount on terms that are  reasonably  acceptable to S1
Holdings.  If such third party cash  financing is not  available or offered with
respect to either the Second or Third Payment, S1 Holdings may make such Payment
by  tendering  a bill of  exchange  issued by S1  Holdings in the amount of such
Payment.

                  1.3(d).  Notwithstanding  any other  provision of this Section
1.3, if from and after the Closing Date until the Third  Payment Date any one or
more of the "Acceleration  Events" set forth in this Section 1.3(d) shall occur;
then (x) S1  Holdings  shall not pay  either  the  Second  Payment  or the Third
Payment if the Second Payment Date shall not have occurred, or the Third Payment
if the  Third  Payment  Date  shall  not  have  occurred,  as of the date of the
occurrence of any of the above,  and (y) S1 Holdings shall  immediately  pay the
Sellers  an  aggregate  amount  of cash,  or if  third  party  financing  is not
available to S1 Holdings, such other type of consideration selected by Akkermans
as set forth in  Section  1.3(c)  hereof,  equal to the  product  of (i)  $35.75
multiplied  by (ii) the number of  Earn-out  Points  (as  computed  pursuant  to
Schedule 1.3 hereto) which have not then been forfeited.

                  For purposes of this Section 1.3(d),  an "Acceleration  Event"
shall mean (A) any person or group of persons  (within the meaning of Section 13
or 14 of the



                                  3
<PAGE>

Securities  Exchange Act of 1934,  as amended (the  "Exchange  Act")) shall have
acquired  beneficial  ownership (within the meaning of Rule 13d-3 promulgated by
the SEC under said Act) of 50% or more of the outstanding shares of common stock
of S1, (B) S1 shall  consolidate  or merge with or into any other person  (other
than  pursuant  to a  consolidation  or  merger  pursuant  to which  the  common
stockholders of S1 immediately prior to the effective time of such consolidation
or merger own a  majority  of the issued  and  outstanding  common  stock of the
surviving corporation immediately after such effective time), (C) S1 shall sell,
lease or otherwise transfer, directly or indirectly, all or any substantial part
of the assets of S1 and its Subsidiaries, taken as a whole, to any other person,
(D) S1 Common Stock (or any successor  security  thereto) is no longer quoted on
the Nasdaq Stock  Market  ("Nasdaq")  or a "national  securities  exchange"  (as
defined  in  Section 6 of the  Exchange  Act),  (E) S1(or any  successor  entity
thereto) no longer has a class of securities  registered under the Exchange Act,
or (F) there shall have been an "Akkermans Termination Event," as defined below.
For purposes hereof, an "Akkermans  Termination Event" shall mean the removal of
Akkermans, without Akkermans's consent and other than for cause (as contemplated
in the  Amended and  Restated  Certificate  of  Incorporation  of S1),  from his
position as Chairman of the Board of S1


          1.4. FICS SECURITIES TRANSFERS.

         Each of the Sellers  covenants that it shall not in any way transfer or
assign any of its FICS Securities prior to the Closing.


          1.5. DELIVERIES AT CLOSING.

                  (a) In addition to the other items required  pursuant  hereto,
including without  limitation the documents and items required under Article VII
below, at the Closing,  each Seller shall deliver or cause a  representative  of
all Sellers (the "Custodian") to deliver, as the case may be, to S1 Holdings the
following:

                  1.  If the  Seller  is not a  natural  person,  a copy  of the
                  resolutions or other corporate documentation, certified by the
                  Secretary  (or,  if the  Seller  is a  partnership,  a general
                  partner) of such Seller as being  true,  correct and  complete
                  and  then  in  full   force  and   effect,   authorizing   the
                  Transaction,  the execution,  delivery and performance of this
                  Agreement by the Seller,  and the  performance of the Seller's
                  obligations hereunder.

                  2.  A   certificate   of  the  Seller   certifying   that  the
                  representations  and warranties of such Seller made herein are
                  true,  complete  and correct as of the date of this  Agreement
                  and are true and correct as of the Closing Date, and that such
                  Seller has  performed  and  complied



                                       4
<PAGE>

                  with all covenants and agreements  required to be performed or
                  complied with by him or it on or prior to the Closing.

                  3. Such other  certificates,  instruments  or  documents as S1
                  Holdings  may  reasonably  request  in  order  to  effect  and
                  document the transactions contemplated hereby.

                  4. The irrevocable instruction of each Seller to record in the
                  share registry of FICS the transfer of its FICS  Securities to
                  S1 Holdings.

                  5. An update of the Seller Disclosure  Schedule reflecting any
                  change  required as if the Agreement were being executed as of
                  the date of the Closing.

                  (b) In addition to the other items required  pursuant  hereto,
including without  limitation the documents and items required under Article VII
below, at the Closing, FICS shall deliver, or cause to be delivered, as the case
may be, to S1 Holdings the following:

                  1. A copy of the  resolutions  of the  Board of  Directors  of
                  FICS,  certified  by the  Secretary  of  FICS as  being  true,
                  correct  and  complete  and  then in full  force  and  effect,
                  authorizing  the execution,  delivery and  performance of this
                  Agreement by FICS, and the  performance  of FICS'  obligations
                  hereunder.

                  2. A  certificate  of FICS signed by the managing  director of
                  FICS  certifying  that the  representations  and warranties of
                  FICS made herein are true, complete and correct as of the date
                  of this  Agreement  and are true and correct as of the Closing
                  Date,  and FICS has  performed and complied with all covenants
                  and agreements required to be performed or complied with by it
                  on or prior to the Closing.

                  3. Such other  certificates,  instruments  or  documents as S1
                  Holdings  may  reasonably  request  in  order  to  effect  and
                  document the transactions contemplated hereby.

                  4. An update of the FICS  Disclosure  Schedule  reflecting any
                  change  required as if the Agreement were being executed as of
                  the date of the Closing.

                  5. The  stock  transfer  register  of FICS,  certified  by the
                  Managing  Director  of FICS as then being true,  accurate  and
                  complete.

                  (c) In addition to the other items required  pursuant  hereto,
including without  limitation the documents and items required under Article VII



                                       5
<PAGE>



below, at the Closing, S1 Holdings shall deliver,  or cause to be delivered,  as
the case may be, to each Seller the following:

                  1. A copy of the  resolutions  of the Board of Directors of S1
                  Holdings, certified by the Managing Director of S1 Holdings as
                  being true,  correct and  complete  and then in full force and
                  effect, authorizing the Transaction,  the execution,  delivery
                  and  performance  of this  Agreement by S1  Holdings,  and the
                  performance of S1 Holdings' obligations hereunder.

                  2. Such other  certificates,  instruments  or documents as the
                  Sellers may reasonably request in order to effect and document
                  the transactions contemplated hereby.

                  3. The Initial Payment.

                  (d) In addition to the other items required  pursuant  hereto,
including without  limitation the documents and items required under Article VII
below, at the Closing, S1 shall deliver,  or cause to be delivered,  as the case
may be, to each Seller the following:

                  1. A copy of the  resolutions of the Board of Directors of S1,
                  certified by the  Secretary  of S1 as being true,  correct and
                  complete  and then in full force and effect,  authorizing  the
                  Transaction,  the execution,  delivery and performance of this
                  Agreement  by S1,  and the  performance  of  S1's  obligations
                  hereunder.

                  2.  A  certificate  of  S1  signed  by  the  President  of  S1
                  certifying that the  representations and warranties of S1 made
                  herein are true,  complete  and correct as of the date of this
                  Agreement and are true and correct as of the Closing Date, and
                  S1  has   performed   and  complied  with  all  covenants  and
                  agreements  required to be performed or complied with by it on
                  or  prior  to  the  Closing.

                  3. Such other  certificates,  instruments  or documents as the
                  Sellers may reasonably request in order to effect and document
                  the transactions contemplated hereby.


                                   ARTICLE II
                  REPRESENTATIONS AND WARRANTIES OF THE SELLERS

         Each  of the  Sellers  severally  and  not  jointly  hereby  makes  the
following  representations  and  warranties  to S1 Holdings as set forth in this
Article  II,  each of which is being  relied  upon by S1  Holdings as a material
inducement  to enter into and  perform  this  Agreement.  All of the  disclosure
schedules of the Sellers



                                       6
<PAGE>


referenced below and thereby required of the Sellers pursuant to this Agreement,
which disclosure  schedules shall be  cross-referenced  to the specific sections
and subsections of this Agreement and delivered herewith, are referred to herein
as the "Sellers' Disclosure Schedule."

          2.1. ORGANIZATION OF SELLERS.

         If such Seller is not a natural  person,  such Seller is duly organized
and validly existing under the laws of the jurisdiction of its formation.


          2.2. AUTHORIZATION OF TRANSACTION.

                  (a) If such  Seller is not a natural  person,  such Seller has
full power and  authority to execute and deliver this  Agreement  and to perform
his,  her or its  obligations  hereunder.  The  execution  and  delivery of this
Agreement and the consummation of the transactions contemplated hereby have been
duly authorized by all requisite  action on the part of such Seller and no other
proceedings  on the  part  of  such  Seller  are  necessary  to  consummate  the
transactions  contemplated  hereby.  This  Agreement  has been duly and  validly
executed and delivered by such Seller and (assuming due authorization, execution
and delivery by FICS and S1 Holdings of this  Agreement) will constitute a valid
and legally  binding  obligation of such Seller,  enforceable in accordance with
its terms, except as enforcement may be limited by general principles of equity,
whether  applied  in a court  of law or a court  of  equity  and by  bankruptcy,
insolvency and similar laws affecting  creditors' rights and remedies generally.
Except as set forth in Section 2.2(a) of the Sellers' Disclosure Schedule,  such
Seller  need not give any  notice  to,  make any  filing  with,  or  obtain  any
authorization,  consent, or approval of any government or governmental agency in
order to consummate the transactions contemplated by this Agreement.

                  (b) Such Seller  acknowledges that he, she or it has read this
Agreement and has been provided with, or been granted access to, all information
necessary  to make his or her decision to execute  this  Agreement.  Such Seller
acknowledges  that his, her or its signature on this  Agreement  shall be deemed
his, her or its written consent, in his, her or its capacity as a shareholder of
FICS, to the execution of the Agreement by a representative of FICS on behalf of
FICS, and to the  consummation of all of the  transactions  contemplated by this
Agreement.  Such Seller  hereby  waives any right of first  refusal,  preemptive
right  or  other  right  which  he,  she  or it  may  have  (including,  without
limitation,  rights  arising under  Article 11 of the FICS Restated  Articles of
Association (Statuten)) to acquire any of the FICS Securities and the FICS Bonds
to be sold by any other Seller pursuant to this Agreement.


                                       7
<PAGE>

          2.3. NONCONTRAVENTION.

         Neither  the  execution  and the  delivery of this  Agreement,  nor the
consummation  of the  transactions  contemplated  hereby,  will (A)  violate any
constitution,  statute, regulation,  rule, injunction,  judgment, order, decree,
ruling, charge, or other restriction of any government,  governmental agency, or
court to which such Seller is subject, (B) conflict with, result in a breach of,
constitute a default (or an event which,  with notice or lapse of time, or both,
would constitute a default) under,  result in the acceleration of, create in any
party the right to  accelerate,  terminate,  modify,  or cancel,  or require any
notice under any agreement,  contract, lease, license,  instrument,  note, bond,
mortgage, deed of trust, or other arrangement to which such Seller is a party or
by which he or it is bound or to which any of his or its  assets is  subject  or
(C) if such  Seller is not a  natural  person,  violate  any  provisions  of its
organizational documents.

          2.4. BROKER'S FEES.

         Except for the  agreement  described in Section 3.6, such Seller has no
liability or obligation to pay any fees or commissions to any broker, finder, or
agent with respect to the  transactions  contemplated  by this Agreement nor has
such Seller created any such liability or obligation which, upon consummation of
the  Transaction,  will  become  an  obligation  of FICS or any FICS  Subsidiary
(defined below), or S1 Holdings or S1.

          2.5. FICS SECURITIES.

         Such Seller holds of record and owns  beneficially  the FICS Securities
set forth next to his, her or its name in Section 2.5 of the Sellers' Disclosure
Schedule,  free and clear of any restrictions on transfer (other than the rights
of S1  Holdings  hereunder  and the  rights in favor of FICS and  certain  other
Sellers which are described in Section 2.5 of the Sellers' Disclosure Schedule),
taxes,  security  interests,  options,  warrants,  purchase  rights,  contracts,
commitments,  equities,  claims, and demands.  Such Seller is not a party to any
option,  warrant,  purchase  right,  call, or other contract or commitment  that
could require such Seller to sell, transfer, or otherwise dispose of any capital
stock of FICS.  Except as set forth at Section  2.5 of the  Sellers'  Disclosure
Schedule,  such  Seller  is not a party to any  voting  trust,  proxy,  or other
agreement or  understanding  with respect to the voting of any capital  stock of
FICS.

          2.6. ABSENCE OF BANKRUPTCY PROCEEDINGS.

         There are no  bankruptcy,  reorganization  or  arrangement  proceedings
pending against, being contemplated by, or threatened against such Seller.


                                       8
<PAGE>

                                   ARTICLE III
                     REPRESENTATIONS AND WARRANTIES OF FICS

         FICS hereby makes the following  representations  and  warranties to S1
Holdings as set forth in this Article III, each of which is being relied upon by
S1 Holdings as a material  inducement to enter into and perform this  Agreement.
All of the disclosure  schedules of FICS referenced  below and thereby  required
pursuant to this Agreement, which disclosure schedules shall be cross-referenced
to the  specific  sections  and  subsections  of this  Agreement  and  delivered
herewith, are referred to herein as the "FICS Disclosure Schedule."

          3.1. CORPORATE ORGANIZATION.

                  (a) FICS is a corporation  duly organized and validly existing
under the laws of Belgium.  FICS has the corporate power and authority to own or
lease all of its properties and assets and to carry on its business as it is now
being  conducted,  and is duly  licensed  or  qualified  to do  business in each
jurisdiction in which the nature of any material business conducted by it or the
character or location of any material properties or assets owned or leased by it
makes such  licensing  or  qualification  necessary.  The  Restated  Articles of
Association  (Statuten)  of FICS (the  "FICS  Statuten"),  copies of which  have
previously  been delivered to S1, are true,  correct and complete copies of such
documents as in effect as of the date of this Agreement.

                  (b) Each  "Subsidiary"  (defined below) of FICS (each, a "FICS
Subsidiary")  and the  jurisdiction of its  organization is set forth at Section
3.1(b) of the FICS  Disclosure  Schedule.  Each FICS Subsidiary is a corporation
duly organized and validly  existing under the laws of the  jurisdiction  of its
organization.  Each FICS Subsidiary has the corporate power and authority to own
or lease all of its  properties and assets and to carry on its business as it is
now being  conducted,  and is duly  licensed or qualified to do business in each
jurisdiction in which the nature of any material business conducted by it or the
character or location of any material properties or assets owned or leased by it
makes  such  licensing  or  qualification   necessary.   The  charter  or  other
constitutive or corporate governance  documents of each FICS Subsidiary,  copies
of which have  previously  been delivered to S1, are true,  correct and complete
copies of such  documents  as in effect  as of the date of this  Agreement.  For
purposes of this Agreement,  the term  "Subsidiary,"  with respect to any party,
means any corporation,  partnership or other organization,  whether incorporated
or  unincorporated,  (i) which is  consolidated  with such  party for  financial
reporting  purposes,  or (ii) in which such party holds a 25% or greater equity,
partnership or other capital interest.


                                       9
<PAGE>

          3.2. CAPITALIZATION.

                  (a) The  capital  stock of FICS,  all of which is  issued  and
outstanding,  is as follows: (i) 96,350 FICS Ordinary Shares, (ii) 40,000 shares
of Series B1 preferred stock, no par value per share, (iii) 950 shares of Series
B2  preferred  stock,  no par value per share and (iv) 9,302  shares of Series C
preferred stock, no par value per share (the Series B1, B2 and C preferred stock
is collectively referred to herein as "FICS Preferred Stock"). The FICS Ordinary
Shares and FICS Preferred Stock have been duly authorized and validly issued and
are fully paid and nonassessable.  Except for rights arising pursuant to Article
11 of the FICS Statuten,  statutory preferential subscription rights as provided
by Belgian  law and except as set forth in  Section  1.4 of the FICS  Disclosure
Schedule,  there are no  preemptive  or  statutory  rights to  acquire  any FICS
Securities,  including  without  limitation,  any FICS  Ordinary  Shares or FICS
Preferred  Stock.  Except for  $3,750,000 of FICS  Convertible  Bond 1 bonds and
$383,737 of Convertible Bond 2 bonds, FICS does not have and is not bound by any
outstanding  subscriptions,  options, warrants, calls, commitments or agreements
of any  character  calling for the  purchase  or  issuance of any FICS  Ordinary
Shares or shares of FICS Preferred Stock or any other equity security of FICS or
any securities  representing the right to purchase or otherwise receive any FICS
Ordinary Shares or any other equity security of FICS.

                  (b)  Except  as set  forth  at  Section  3.2(b)  of  the  FICS
Disclosure  Schedule,  FICS owns, directly or indirectly,  all of the issued and
outstanding  shares of capital stock of each FICS Subsidiary,  free and clear of
all liens, charges,  encumbrances and security interests whatsoever,  and all of
such  shares  are  duly  authorized  and  validly  issued  and are  fully  paid,
nonassessable  and  free  of  preemptive  rights,  with  no  personal  liability
attaching  to the  ownership  thereof.  Except for 16,500  shares of FICS Option
Subsidiary  Stock  reserved  for issuance  upon  exercise of  outstanding  stock
options or  otherwise,  pursuant  to the FICS Stock Plan (of which  options  for
15,682.5 shares are currently  outstanding),  no FICS Subsidiary has or is bound
by any  outstanding  subscriptions,  options,  warrants,  calls,  commitments or
agreements of any  character  calling for the purchase or issuance of any shares
of  capital  stock  or any  other  equity  security  of such  Subsidiary  or any
securities representing the right to purchase or otherwise receive any shares of
capital stock or any other equity security of such Subsidiary.  The names of the
optionees,  the date of each option to purchase  FICS  Option  Subsidiary  Stock
granted,  the number of shares subject to each such option,  the expiration date
of each such  option,  and the price at which each such option may be  exercised
under the FICS Stock Plan are set forth in Section 3.2(b) of the FICS Disclosure
Schedule.

          3.3. AUTHORITY; NO VIOLATION.

                  (a) FICS has full corporate power and authority to execute and
deliver this  Agreement.  The execution and delivery of this  Agreement has been
duly and validly  approved by the Board of Directors  of FICS.  Assuming the due
execution



                                       10
<PAGE>

hereof by each Seller, no further corporate approvals or consents on the part of
FICS, its directors or shareholders are necessary to approve this Agreement,  or
to consummate the transactions contemplated hereby. This Agreement has been duly
and validly  executed and  delivered by FICS and  (assuming  due  authorization,
execution  and  delivery by S1 and each of the Sellers of this  Agreement)  will
constitute  valid and binding  obligation of FICS,  enforceable  against FICS in
accordance  with its  terms,  except as  enforcement  may be  limited by general
principles of equity whether  applied in a court of law or a court of equity and
by  bankruptcy,  insolvency  and similar laws  affecting  creditors'  rights and
remedies generally.

                  (b) Neither the  execution  and delivery of this  Agreement by
FICS nor compliance by FICS with any of the terms or provisions hereof, will (i)
violate any provision of the Restated  Articles of  Association of FICS, or (ii)
assuming that the consents and  approvals  referred to in Section 3.4 hereof are
duly obtained,  (x) violate any Laws (as defined in Section 9.11)  applicable to
FICS or any FICS Subsidiary, or any of their respective properties or assets, or
(y) violate,  conflict with,  result in a breach of any provision of or the loss
of any benefit  under,  constitute a default (or an event which,  with notice or
lapse of time,  or both,  would  constitute  a  default)  under,  result  in the
termination of or a right of termination or cancellation  under,  accelerate the
performance required by, or result in the creation of any lien, pledge, security
interest,  charge or other encumbrance upon any of the respective  properties or
assets of FICS or any FICS Subsidiary,  under,  any of the terms,  conditions or
provisions  of any note,  bond,  mortgage,  indenture,  deed of trust,  license,
lease,  agreement or other  instrument  or  obligation to which FICS or any FICS
Subsidiary is a party, or by which they or any of their respective properties or
assets may be bound or affected.

                  3.4. CONSENTS AND APPROVALS.

                  Except for such filings, notices, authorizations or approvals,
as  applicable,  as may be set  forth  in  Section  3.4 of the  FICS  Disclosure
Schedule,  no  consents or  approvals  of or filings or  registrations  with any
court,  administrative  agency or commission or other governmental  authority or
instrumentality  (each a  "Governmental  Entity"),  or with any third  party are
necessary  in  connection  with (1) the  execution  and delivery by FICS of this
Agreement,   and  (2)  the   consummation  of  the  Transaction  and  the  other
transactions  contemplated  hereby,  except,  in each case,  for such  consents,
approvals  or  filings,  the failure of which to obtain will not have a Material
Adverse  Effect on the  ability of S1 Holdings to  consummate  the  transactions
contemplated hereby.


                    3.5. FINANCIAL STATEMENTS; BOOKS AND RECORDS.

                  FICS has previously delivered to S1 Holdings true, correct and
complete copies of the consolidated  balance sheets of FICS and its Subsidiaries
as of  December  31  for  the  fiscal  years  1998  and  1997  and  the  related
consolidated  statements of operations,  stockholders' equity and cash flows for
the  fiscal  years  1998,  1997  and



                                       11
<PAGE>

1996, inclusive,  as reported in FICS' Registration  Statement on Form F-1 filed
with the  Securities and Exchange  Commission  (the "SEC") on April 13, 1999, as
amended  by  Amendment  No.  1  filed  with  the  SEC on  April  30,  1999  (the
"Registration Statement") under the U.S. Securities Act of 1933, as amended (the
"Securities   Act"),   in  each  case   accompanied   by  the  audit  report  of
PricewaterhouseCoopers & Co.  Bedrijfsrevisoren,  independent public accountants
with respect to FICS, the interim financial statements of FICS as of and for the
six months ended June 30, 1999 and 1998. The financial statements referred to in
this Section 3.5 (including the related notes, where applicable) fairly present,
and the  financial  statements  referred  to in Section  6.6 hereof  will fairly
present  (subject,  in the  case of the  unaudited  statements,  to  normal  and
recurring audit  adjustments),  the results of the  consolidated  operations and
consolidated financial condition of FICS and its Subsidiaries for the respective
fiscal  periods or as of the  respective  dates therein set forth;  each of such
statements  (including  the related notes,  where  applicable)  comply,  and the
financial  statements  referred  to in Section  6.6  hereof  will  comply,  with
applicable accounting  requirements and with the published rules and regulations
of the SEC with  respect  thereto  and each of such  statements  (including  the
related notes, where applicable) has been, and the financial statements referred
to in Section 6.6 hereof will be prepared in accordance with generally  accepted
accounting principles, as applied in the United States, and consistently applied
during the periods involved ("U.S.  GAAP"),  except in each case as indicated in
such statements or in the notes thereto or, in the case of unaudited statements.
The books and  records  of FICS have  been,  and are  being,  maintained  in all
material  respects in accordance with U.S. GAAP and any other  applicable  legal
and  accounting  requirements.  The statutory  financial  statements of FICS and
those of its books and records  prepared  to conform  with the  requirements  of
Belgian law are  prepared in  accordance  with Belgian  GAAP.  Other than in the
previous  sentence,   references  elsewhere  in  this  Agreement  to  "financial
statements  and "books and  records" do not refer to  financial  statements  and
books and records  prepared by FICS to conform with the  requirements of Belgian
law.

          3.6. BROKER'S FEES.

         Neither  FICS  nor any  FICS  Subsidiary  nor any of  their  respective
officers  or  directors  has  employed  any  broker or finder  or  incurred  any
liability for any broker's fees, commissions or finder's fees in connection with
any of the  transactions  contemplated by this  Agreement,  except that FICS has
engaged, and will pay a fee or commission to Credit Suisse First Boston ("CSFB")
in accordance with the terms of a letter agreement  between CSFB and FICS, dated
May 16, 1999, a true, complete and correct copy of which has been provided to S1
Holdings.

          3.7. ABSENCE OF CERTAIN CHANGES OR EVENTS.

                  (a) Except as set forth at Section 3.7 of the FICS  Disclosure
Schedule,  since December 31, 1998 (i) neither FICS nor any FICS  Subsidiary has
incurred any



                                       12
<PAGE>


material liability,  except as contemplated by this Agreement or in the ordinary
course of their  businesses  consistent with their past  practices,  and (ii) no
event has occurred which has had, or is likely to have,  individually  or in the
aggregate, a Material Adverse Effect on FICS.

                  (b) Since December 31, 1998, FICS and each FICS Subsidiary has
carried on its respective businesses in the ordinary and usual course consistent
with past practices.

          3.8. LEGAL PROCEEDINGS.

                  (a) Except as set forth at Section 3.8 of the FICS  Disclosure
Schedule,  neither FICS nor any FICS Subsidiary is a party to any, and there are
no pending,  or to the  knowledge of FICS,  threatened,  legal,  administrative,
arbitration or other proceedings,  claims, actions or governmental or regulatory
investigations  of any  nature  against  FICS or any  FICS  Subsidiary  or which
challenge the validity of the transactions  contemplated by this Agreement as to
which there is a reasonable probability of success.

                  (b) There is no injunction, order, judgment, or decree imposed
upon FICS, any FICS Subsidiary or the assets of FICS or any FICS Subsidiary.

          3.9. TAXES AND TAX RETURNS.

                  (a) For purposes of this Section 3.9,  FICS shall include FICS
and each FICS  Subsidiary  and any other  affiliated or related  corporation  or
entity if FICS or any FICS  Subsidiary has or could have any material  liability
for the taxes of such corporation or entity. FICS has duly filed all Tax Returns
required  to be filed by it on or prior to the date  hereof  (all  such  returns
being accurate and complete in all material  respects) and has duly paid or made
provision on the financial statements referred to in Sections 3.5 and 6.6 hereof
in accordance  with U.S.  GAAP for the payment of all material  Taxes which have
been incurred or are due or claimed to be due from it by Taxing  Authorities  on
or  prior  to the  date  hereof  other  than  Taxes  (a)  which  (x) are not yet
delinquent or (y) are being contested in good faith and set forth in Section 3.9
of the FICS Disclosure  Schedule and (b) which have not been finally determined.
The charges,  accruals,  and reserves with respect to Taxes on the books of FICS
are adequate (as determined in accordance with U.S. GAAP) and are at least equal
to its liability for Taxes. There exists no proposed tax assessment against FICS
except  as  disclosed  in the  FICS  financial  statements.  No  consent  to the
application of Section  341(f)(2) of the Code has been filed with respect to any
property or assets  held,  acquired,  or to be acquired by FICS.  All Taxes that
FICS is or was  required  to  withhold  or collect  have been duly  withheld  or
collected and, to the extent required, have been paid to the proper Governmental
Entity.  All  liability  with  respect  to the  Tax  Returns  of  FICS  and  its
Subsidiaries  has been satisfied for all years to and including  1998. No Taxing
Authority  has  notified  FICS of, or  otherwise



                                       13
<PAGE>


asserted,  that  there are any  material  deficiencies  with  respect to the Tax
Returns of FICS subsequent to 1998. There are no material disputes  pending,  or
claims asserted for, Taxes or assessments upon FICS, nor has FICS been requested
to give any  currently  effective  waivers  extending  the  statutory  period of
limitation applicable to any Tax Return for any period. In addition, Tax Returns
that are accurate and complete in all material  respects have been filed by FICS
for all  periods  for  which  returns  were  due  with  respect  to  income  tax
withholding with respect to wages and other income and the amounts shown on such
Tax Returns to be due and payable  have been paid in full or adequate  provision
therefor in accordance with U.S. GAAP has been included by FICS in the financial
statements  referred to in Sections 3.5 and 6.6 hereto. No audit by any relevant
Taxing  Authority in connection  with any FICS Tax Return is pending or has been
announced.  All deficiencies  proposed as a result of any examinations have been
paid or settled,  for all periods  before and  including  the taxable year ended
December  31,  1998.  FICS has not  consented  to any waiver or extension of any
statute of  limitations  with  respect  to any Tax.  FICS has  provided  or made
available to S1 Holdings  complete and correct copies of its Tax Returns and all
material  correspondence and documents,  if any, relating directly or indirectly
to taxes  for  each  taxable  year or  other  relevant  period  as to which  the
applicable  statute  of  limitations  has not run on the date  hereof.  For this
purpose, "correspondence and documents" include, without limitation, amended Tax
Returns, pending claims for refunds, notices from Taxing Authorities of proposed
changes  or  adjustments  to Taxes or Tax  Returns  that  have not been  finally
resolved, consents to assessment or collection of Taxes, acceptances of proposed
adjustments,  closing agreements, rulings and determination letters and requests
therefor,  and all other written  communications  to or from Taxing  Authorities
relating to any material Tax liability of FICS.

                    (b) For purposes of this Agreement:

                  "Tax" means any tax (including  any income tax,  capital gains
tax,  value-added tax, sales tax,  property tax, gift tax, or estate tax), levy,
assessment, tariff, duty (including any customs duty), deficiency, or other fee,
and any related charge or amount  (including  any fine,  penalty,  interest,  or
addition to tax), imposed,  assessed,  or collected by or under the authority of
any Taxing  Authority or payable  pursuant to any  tax-sharing  agreement or any
other  contract  relating  to the  sharing  or  payment  of any such tax,  levy,
assessment, tariff, duty, deficiency, or fee.

                  "Tax  Return"  means any  return  (including  any  information
return),  report,  statement,  schedule,  notice,  form,  or other  document  or
information  filed  with or  submitted  to,  or  required  to be  filed  with or
submitted  to,  any  Taxing  Authority  in  connection  with the  determination,
assessment,  collection,  or  payment  of any  Tax  or in  connection  with  the
administration,  implementation,  or enforcement of or compliance  with any law,
regulation or other legal requirement relating to any Tax.



                                       14
<PAGE>


                  "Taxing Authority" means any:

                           (a)  nation,  state,  county,  city,  town,  village,
district, or other jurisdiction of any nature;

                           (b) federal,  state,  local,  municipal,  foreign, or
other government;

                           (c) governmental or  quasi-governmental  authority of
any nature (including any governmental agency, branch, department,  official, or
entity and any court or other tribunal);

                           (d) multi-national organization or body; or

                           (e) body  exercising,  or entitled to  exercise,  any
administrative,  executive, judicial, legislative, police, regulatory, or taxing
authority or power of any nature.


                    3.10. EMPLOYEE PLANS.

                  (a) For purposes of this Section 3.10:  (1) "Employee  Benefit
Plan" means any plan,  agreement or other arrangement (other than plans mandated
or provided for by U.S. and foreign statute such as Social  Security,  workmen's
compensation,  unemployment  compensation  and the  like) for the  providing  of
retirement  or welfare  benefits as  described  in Section  3(3) of the Employee
Retirement  Income  Security  Act of 1974,  as  amended  ("ERISA")  or any other
benefit other than cash  compensation to employees,  including plans which would
not be subject to ERISA because all of the  participants are non-resident in the
United States;  (2) the FICS Group means FICS, its  Subsidiaries,  and any other
entity which would be deemed part of a controlled or affiliated group within the
meaning of Section 414 of the Code without  regard to whether such  entities are
organized outside the United States.

                  (b) Section 10(b) of the FICS Disclosure Schedule sets forth a
true and complete  list of each  Employee  Benefit  Plan that FICS  maintains or
contributes  to as of the date of this  Agreement,  or under  which FICS has any
liability (collectively,  the "FICS Plans"). FICS has previously delivered to S1
a true,  correct and complete  copy of each FICS Plan and all related  documents
and a written description of any FICS Plan that is not otherwise in writing.

                  (c) FICS has performed all of its  obligations  under all FICS
Plans. FICS has made appropriate entries in its financial records and statements
for all obligations  and liabilities  under the FICS Plans that have accrued but
are not due. No statement,  either  written or oral,  has been made by FICS with
regard to any FICS Plan that was not in  accordance  with the FICS Plan and that
could  have a  Material  Adverse  Effect on S1  Holdings.  FICS has no  material
liability to the IRS, the U.S.



                                       15
<PAGE>


Pension   Benefit   Guaranty   Corporation   or  any   other   governmental   or
quasi-governmental agency or authority with respect to any FICS Plan.

                  (d)  Except  as set  forth  at  Section  3.10(d)  of the  FICS
Disclosure  Schedule,  (i)  each  of  the  FICS  Plans  has  been  operated  and
administered in all material  respects in compliance with applicable  Laws, (ii)
FICS does not provide health,  life insurance or other welfare  benefits for any
retired or former  employee and is not obligated to provide such benefits to any
active  employee  following such employee's  retirement or other  termination of
service, other than coverage mandated by applicable Law, (iii) FICS has incurred
no  liability  under ERISA or any other Law  relating  to  employee  benefits or
employees or their  beneficiaries that has not been satisfied in full or accrued
in accordance with U.S. GAAP in the financial  statements referred to in Section
3.5 and 6.6 hereof,  and no condition  exists that  presents a material  risk of
FICS incurring a material liability thereunder,  (iv) all contributions or other
amounts payable by FICS with respect to each FICS Plan and all other liabilities
of FICS with  respect  to each FICS  Plan,  in  respect of current or prior plan
years have been paid or accrued in  accordance  with U.S.  GAAP in the financial
statements  referred to in Sections 3.5 and 6.6 hereof,  (v) to the knowledge of
FICS, there are no pending, threatened or anticipated claims (other than routine
claims for  benefits)  by, or behalf of or against any of the plans or any trust
related  thereto,  (vi) all FICS Plans  could be  terminated  as of the  Closing
without  material  liability  in excess of the amount  accrued  therefor  in the
financial statements referred to in Sections 3.5 and 6.6 hereof.

          3.11. EMPLOYEES.

         FICS and each  FICS  Subsidiary  complies  with all  labor  and  social
security laws, decrees, ordinances and regulations applicable to it.

          3.12. CERTAIN CONTRACTS.

                  (a) Except as set forth at Section 3.12 of the FICS Disclosure
Schedule,  neither  FICS nor any FICS  Subsidiary  is a party to or bound by any
contract,  arrangement  or commitment  (i) with respect to the employment of any
directors, officers, employees or consultants, (ii) which, upon the consummation
of the  transactions  contemplated  by this Agreement will (either alone or upon
the occurrence of any additional acts or events) result in any payment  (whether
of severance pay or otherwise),  except as  contemplated  by Article I, becoming
due  from S1,  FICS or any of their  respective  Subsidiaries  to any  director,
officer or employee thereof, (iii) which materially restricts the conduct of any
line of business by FICS or any FICS  Subsidiary,  (iv) with or to a labor union
or guild  (including  any  collective  bargaining  agreement)  or (v)  except as
contemplated  by  Article I and as set forth on Section  3.12(a)(v)  of the FICS
Disclosure  Schedule,  any of the  benefits of which will be  increased,  or the
vesting of the benefits of which will be accelerated by the occurrence of any of
the  transactions  contemplated  by this  Agreement,  or the value of any of the



                                       16
<PAGE>


benefits  of which will be  calculated  on the basis of any of the  transactions
contemplated  by this  Agreement  (including  as to this clause  (v),  any stock
option plan,  stock  appreciation  rights plan,  restricted  stock plan or stock
purchase  plan).  Except as set  forth at  Section  3.12 of the FICS  Disclosure
Schedule,  there  are  no  employment,   consulting  and  deferred  compensation
agreements to which FICS or any FICS  Subsidiary is a party.  Section 3.12(a) of
the FICS Disclosure Schedule sets forth a list of all (i) material contracts (as
defined in Item  601(b)(10) of Regulation S-K  promulgated  under the Securities
Act) of FICS and the FICS Subsidiaries and (ii) any other contract to which FICS
or any FICS Subsidiary is obligated to pay $15,000 or more in any annual period.
Each  contract,  arrangement or commitment of the type described in this Section
3.12(a),  whether  or not set forth in Section  3.12(a)  of the FICS  Disclosure
Schedule,  is referred to herein as a "FICS  Contract," and neither FICS nor any
of its  Subsidiaries  has received  notice of, nor do any executive  officers of
such entities know of, any violation of any FICS Contract.

                  (b) (i) Each FICS  Contract  is valid and  binding and in full
force  and  effect,  (ii)  FICS and each  FICS  Subsidiary  has in all  material
respects performed all obligations  required to be performed by it to date under
each FICS Contract, and (iii) no event or condition exists which constitutes or,
after notice or lapse of time or both, would  constitute,  a material default on
the part of FICS or any FICS Subsidiary under any such FICS Contract.

          3.13. ENVIRONMENTAL MATTERS.

                  (a) Each of FICS and the FICS Subsidiaries is in compliance in
all material  respects  with all  applicable  Laws and  regulations  relating to
pollution or protection of the environment  (including without limitation,  Laws
and  regulations  relating to  emissions,  discharges,  releases and  threatened
releases of Hazardous Materials (as hereinafter defined)), or otherwise relating
to the manufacture, processing, distribution, use, treatment, storage, disposal,
transport or handling of Hazardous Materials.

                  (b) There is no suit, claim, action, proceeding, investigation
or  notice  pending  or,  to the  knowledge  of FICS and the FICS  Subsidiaries,
threatened  (or past or present  actions or events  that could form the basis of
any such suit, claim,  action,  proceeding,  investigation or notice),  in which
FICS or any FICS  Subsidiary  has been or,  with  respect to  threatened  suits,
claims,  actions,  proceedings,  investigations  or notices  may be,  named as a
defendant (x) for alleged material noncompliance (including by any predecessor),
with any  environmental  law, rule or regulation or (y) relating to any material
release or threatened  release into the  environment of any Hazardous  Material,
occurring  at or on a site  owned,  leased  or  operated  by  FICS  or any  FICS
Subsidiary,  or to the  knowledge of FICS,  relating to any material  release or
threatened release into the environment of any Hazardous Material,  occurring at
or on a site not owned, leased or operated by FICS or any FICS Subsidiary.



                                       17
<PAGE>


                  (c) To the knowledge of FICS and the FICS Subsidiaries, during
the period of FICS' or any FICS  Subsidiary's  ownership  or operation of any of
its properties,  there has not been any material release of Hazardous  Materials
in, on, under or affecting any such property.

                  (d)  For  purposes  of this  Agreement,  the  term  "Hazardous
Material"  means  any  hazardous  waste,   petroleum  product,   polychlorinated
biphenyl, chemical, pollutant, contaminant, pesticide, radioactive substance, or
other toxic material,  or other material or substance (in each such case,  other
than small quantities of such substances in retail  containers)  regulated under
any applicable  environmental or public health statute, law, ordinance,  rule or
regulation.

          3.14. PROPERTIES AND ASSETS.

         Section  3.14 of the  FICS  Disclosure  Schedule  lists  (i)  all  real
property,  including a description and identification of location, owned by FICS
and each FICS Subsidiary; (ii) each real property lease, sublease or installment
purchase  arrangement to which FICS or any FICS  Subsidiary is a party;  (iii) a
description  of each contract for the purchase,  sale,  or  development  of real
estate to which FICS or any FICS  Subsidiary  is a party;  and (iv) all items of
FICS' or any FICS  Subsidiary's  tangible personal property and equipment with a
book value of $50,000 or more or having any annual  lease  payment of $50,000 or
more. Except for (a) items reflected in FICS' consolidated  financial statements
as of December 31, 1998  referred to in Section 3.5 hereof,  (b)  exceptions  to
title that do not interfere  materially with FICS' or any FICS  Subsidiary's use
and  enjoyment  of owned or leased real  property,  (c) liens for  current  real
estate taxes not yet  delinquent,  or being  contested  in good faith,  properly
reserved  against (and  reflected  on the  financial  statements  referred to in
Section  3.5  above),  (d)  properties  and assets  sold or  transferred  in the
ordinary  course of business  consistent  with past practices since December 31,
1998, and (e) items listed in Section 3.14 of the FICS Disclosure Schedule, FICS
and each FICS  Subsidiary  have good and, as to owned real property,  marketable
and insurable  title to all their  properties and assets,  free and clear of all
liens, claims, charges and other encumbrances. FICS and each FICS Subsidiary, as
lessees,  have the right under valid and  subsisting  leases to occupy,  use and
possess all property  leased by them,  and neither FICS nor any FICS  Subsidiary
has experienced  any material  uninsured  damage or destruction  with respect to
such properties  since December 31, 1998. All properties and assets used by FICS
and each FICS Subsidiary are in good operating condition and repair suitable for
the  purposes for which they are  currently  utilized and comply in all material
respects with all Laws relating  thereto now in effect or scheduled to come into
effect. FICS and each FICS Subsidiary enjoy peaceful and undisturbed  possession
under all leases for the use of all  property  under which they are the lessees,
and all  leases to which  FICS or any FICS  Subsidiary  is a party are valid and
binding  obligations in accordance with the terms thereof.  Neither FICS nor any
FICS Subsidiary is in material default with respect to any such lease, and there
has occurred no default by FICS or any FICS  Subsidiary  or event which with the



                                       18
<PAGE>

lapse of time or the  giving of notice,  or both,  would  constitute  a material
default  under any such  lease.  To the  knowledge  of FICS,  there are no Laws,
conditions of record, or other impediments which interfere with the intended use
by FICS or any FICS Subsidiary of any of the property owned, leased, or occupied
by them.


          3.15. INSURANCE.

         Section 3.15 of the FICS Disclosure  Schedule contains a true,  correct
and complete list of all insurance policies and bonds maintained by FICS and any
FICS Subsidiary,  including the name of the insurer, the policy number, the type
of policy and any applicable  deductibles,  and all such insurance  policies and
bonds (or other  insurance  policies and bonds that have,  from time to time, in
respect  of the  nature of the risks  insured  against  and  amount of  coverage
provided,  been  substantially  similar in kind and  amount to that  customarily
carried  by  parties  similarly  situated  who  own  properties  and  engage  in
businesses substantially similar to that of FICS and any FICS Subsidiary) are in
full  force  and  effect  and have  been in full  force  and  effect  since  the
respective  dates each such  policies and bonds were first  obtained.  As of the
date  hereof,  neither FICS nor any FICS  Subsidiary  has received any notice of
cancellation  or amendment of any such policy or bond or is in default under any
such policy or bond, no coverage  thereunder is being  disputed and all material
claims  thereunder have been filed in a timely fashion.  The existing  insurance
carried by FICS and FICS  Subsidiaries is and will continue to be, in respect of
the nature of the risks  insured  against and the amount of  coverage  provided,
substantially  similar in kind and amount to that customarily carried by parties
similarly  situated who own  properties  and engage in businesses  substantially
similar  to that of  FICS  and the  FICS  Subsidiaries,  and is  sufficient  for
compliance by FICS and the FICS  Subsidiaries  with all  requirements of Law and
agreements to which FICS or any of the FICS Subsidiaries is subject or is party.
True,  correct and complete  copies of all such policies and bonds  reflected at
Section 3.15 of the FICS Disclosure  Schedule,  as in effect on the date hereof,
have been delivered or made available to S1.

          3.16. COMPLIANCE WITH APPLICABLE LAWS.

         Each of FICS and any  FICS  Subsidiary  has  complied  in all  material
respects  with all Laws  applicable  to it or to the  operation of its business.
Neither  FICS nor any FICS  Subsidiary  has  received any notice of any material
alleged or threatened  claim,  violation,  or liability under any such Laws that
has not heretofore been cured and for which there is any remaining liability.

          3.17. FICS INFORMATION.

         The  information  relating  to FICS  and  each  FICS  Subsidiary  to be
provided by FICS to be contained  in a proxy  statement to be filed with the SEC
in  connection  with  obtaining   stockholder   approval  of  the   transactions
contemplated  by this  Agreement



                                       19
<PAGE>

will not  contain  any untrue  statement  of a material  fact or omit to state a
material  fact  necessary  to make  the  statements  therein,  in  light  of the
circumstances in which they are made, not misleading.

          3.18. INTELLECTUAL PROPERTY.

         Except,  in each  case,  as set  forth  in  Section  3.18  of the  FICS
Disclosure Schedule:

                  (a) (i) FICS and each FICS Subsidiary  owns, free and clear of
liens, orders and arbitration awards, or are licensed or otherwise possess valid
and  enforceable  rights to use all patents,  trademarks,  trade names,  service
marks,  copyrights  and  any  applications  therefor,  schematics,   technology,
know-how,  trade secrets,  ideas,  algorithms,  processes,  Software (as defined
below),  and  tangible  or  intangible   proprietary   information  or  material
("Intellectual  Property")  that are used in the  business  of FICS and the FICS
Subsidiaries.   "Software"   means  any  and  all  (i)  computer   programs  and
applications,  including  any and all software  implementations  of  algorithms,
models and methodologies,  whether in source code or object code, (ii) databases
and  compilations,  including any and all data and collections of data,  whether
machine readable or otherwise,  (iii)  descriptions,  flow-charts and other work
product used to design,  plan,  organize and develop any of the foregoing,  (iv)
the technology  supporting any Internet site(s) operated by or on behalf of FICS
or any FICS Subsidiary,  and (v) all  documentation,  including user manuals and
training materials, relating to any of the foregoing.

                      (ii)  Except as would  not be  materially  adverse  to the
business of FICS or any FICS  Subsidiary,  FICS and the FICS  Subsidiaries  have
taken  reasonable  steps to protect  their  Intellectual  Property.  There is no
litigation  pending  or,  to the  knowledge  of FICS and the FICS  Subsidiaries,
threatened or any written claim from any person challenging the ownership,  use,
validity or enforceability of any Intellectual  Property, nor is there any basis
for the assertion of any such claim or challenge.

                      (iii)No   material   patent,   trademark,   service  mark,
copyright,  trade secret, computer software or other intellectual property right
other than the Intellectual  Property set forth on Schedule 3.18 is necessary to
conduct the businesses of FICS and its Subsidiaries as presently conducted.

                  (b)   Schedule   3.18(b)   lists  all  (i)   patents,   patent
applications,  registered and unregistered  trademarks,  trade names and service
marks and  registered  copyrights  owned by FICS  included  in the  Intellectual
Property,  including the  jurisdictions  in which each such item of Intellectual
Property  right has been issued or  registered or in which any  application  for
such  issuance  and  registration  has  been  filed,  (ii)  material   licenses,
sublicenses and other  agreements as to which FICS and any FICS Subsidiary are a
party and  pursuant to which any person is  authorized



                                       20
<PAGE>

to use any  Intellectual  Property,  and (iii)  licenses,  sublicenses and other
agreements as to which FICS and any FICS  Subsidiary are a party and pursuant to
which FICS and its  Subsidiaries  are authorized to use any third party patents,
trademarks or copyrights, including Software ("Third Party Intellectual Property
Rights")  which  are  incorporated  in,  are or form a part of any  FICS or FICS
Subsidiary product.

                  (c) (i) To the  knowledge  of FICS and the FICS  Subsidiaries,
there is no unauthorized use,  disclosure,  infringement or  misappropriation of
any  Intellectual  Property  rights  of FICS or any FICS  Subsidiary,  any trade
secret material to FICS or its Subsidiaries,  or any Intellectual Property right
of  any  third  party  to  the  extent  licensed  by  or  through  FICS  or  its
Subsidiaries,  by any employee of FICS or any FICS Subsidiary or third party for
whom FICS is responsible.  Except as set forth in Schedule 3.18(c), there are no
royalties,  fees or other payments  payable by FICS or its  Subsidiaries  to any
person by reason of the  ownership,  use, sale or  disposition  of  Intellectual
Property.

                      (ii) To the knowledge of FICS and its Subsidiaries,  there
has been no prior use of FICS's  registered  trademarks by any third party which
would confer upon said third party superior rights in such trademarks.  FICS and
its Subsidiaries have taken reasonable steps to adequately police the trademarks
against third party infringement,  and the material trademarks registered in the
United  States and in other  jurisdictions  where FICS or its  Subsidiaries  are
doing  business  have been  continuously  used in the form  appearing in, and in
connection with the goods and services listed in, their respective  registration
certificates or any amendment, supplement or office action related thereto.

                  (d) FICS and its  Subsidiaries  are not, nor will they be as a
result of the execution  and delivery of this  Agreement or the  performance  of
their  obligations  under this  Agreement,  in breach of any  material  license,
sublicense or other  agreement  relating to the  Intellectual  Property or Third
Party  Intellectual  Property  Rights,  and the  execution  and delivery of this
Agreement or the performance of the obligations under this Agreement by FICS and
its  Subsidiaries  will not result in the loss or impairment of, or give rise to
any  right  of  any  third  party  to  terminate,  any  of  FICS'  or any of its
Subsidiaries' rights to own any of its Intellectual Property or their respective
rights under any  material  license  agreements,  nor require the consent of any
Governmental Entity or third party in respect of any such Intellectual Property.

                  (e) FICS and its Subsidiaries (i) have no knowledge (including
knowledge of any litigation  pending or threatened or any written claim from any
person) or reason to believe that the conduct of their  businesses  infringe any
patent,  trademark,  service mark, copyright,  trade secret or other proprietary
right of any third  party;  and (ii) have not  advised any third party that such
third party may be infringing any Intellectual Property or breaching any license
or agreement



                                       21
<PAGE>

involving  Intellectual  Property and have not brought or  threatened  any claim
against such third party for such conduct.

                  (f) The Software owned or purported to be owned by FICS or any
of its Subsidiaries, was either (i) developed by employees of FICS or any of its
Subsidiaries within the scope of their employment; (ii) developed by independent
contractors or consultants  who have assigned their rights to FICS or any of its
Subsidiaries pursuant to written agreements; or (iii) otherwise acquired by FICS
or its Subsidiary from a third party.

                  (g) All employees and independent  contractors and consultants
of  FICS  and  its  Subsidiaries  have  executed  and  delivered  to FICS or its
Subsidiaries,  as the  case  may be,  agreements  regarding  the  protection  of
proprietary  information  and the assignment to FICS or its  Subsidiaries of any
Intellectual   Property  arising  from  services   performed  for  FICS  or  its
Subsidiaries by such persons.

                  (h) FICS and its  Subsidiaries  have  obtained or entered into
written agreements with their employees and with third parties,  in transactions
deemed   appropriate,   in  connection   with  the  disclosure  to,  or  use  or
appropriation  by,  employees and third parties,  of trade secret or proprietary
information owned by FICS and its Subsidiaries and not otherwise  protected by a
patent, a patent  application,  copyright,  trademark,  or other registration or
legal scheme ("FICS Confidential Information"), and do not know of any situation
involving such employee or third party use,  disclosure or appropriation of FICS
Confidential Information where the lack of such a written agreement is likely to
result in any Material  Adverse Effect.  Except as set forth in Schedule 3.18(h)
of the FICS Disclosure  Schedule,  neither FICS nor any of its Subsidiaries have
furnished the source code of any of their Software  products to any third party,
deposited any such source code in escrow,  or otherwise  provided access to such
source code to any third party.

                  (i) Except as would not be materially  adverse to the business
of FICS or its  Subsidiaries,  FICS and its  Subsidiaries  have taken reasonable
steps  with the  intent of  ensuring  that their  products  (including  existing
products and technology and products and technology currently under development)
will,  when used in  accordance  with  associated  documentation  on a specified
platform or platforms,  be capable upon  installation of accurately  processing,
providing,  and receiving  date data from,  into,  and between the twentieth and
twenty-first centuries,  including the years 1999 and 2000, and making leap-year
calculations,  provided that all other non-FICS or non-FICS  Subsidiary products
(e.g., hardware,  software and firmware) used in or in combination with FICS' or
its Subsidiaries'  products,  are year 2000 compliant and properly exchange data
with FICS' and its Subsidiaries products.


                                       22
<PAGE>

          3.19. DELIVERY OF FICS STOCK TRANSFER BOOK.

         FICS has made a  notation  in its  share  registry  that,  prior to the
Closing,  no transfer  of FICS  Securities  shall be  recorded  in FICS's  share
registry from the date hereof,  and has delivered  such stock transfer book to a
Belgian  notary,  which  notary  shall hold such stock  transfer  book until the
Closing (or the termination of this Agreement, if earlier).

                                   ARTICLE IV
              REPRESENTATIONS AND WARRANTIES OF S1 HOLDINGS AND S1

         S1  Holdings  and S1  hereby  make the  following  representations  and
warranties  to each  Seller as set forth in this  Article  IV,  each of which is
being  relied  upon by each  Seller as a material  inducement  to enter into and
perform this Agreement.  All of the disclosure  schedules of S1 referenced below
and  thereby  required  of S1  pursuant  to  this  Agreement,  which  disclosure
schedules shall be  cross-referenced to the specific sections and subsections of
this  Agreement  and  delivered  herewith,  are  referred  to  herein as the "S1
Disclosure Schedule."

          4.1. CORPORATE ORGANIZATION.

                  (a) S1 Holdings is a  corporation  (N.V.) duly  organized  and
validly existing under the laws of Belgium.  S1 Holdings has the corporate power
and authority to own or lease all of its  properties  and assets and to carry on
its  business  as  contemplated  by  this  Agreement,  and is duly  licensed  or
qualified  to do  business  in each  jurisdiction  in which  the  nature  of any
material  business  conducted by it or the character or location of any material
properties or assets owned or leased by it makes such licensing or qualification
necessary.  The charter and other corporate  governance documents of S1 Holdings
have previously  been made available to FICS and are true,  correct and complete
copies of such documents as in effect as of the date thereof.

                  (b) S1 is a corporation  duly organized,  validly existing and
in good standing  under the laws of the State of Delaware.  S1 has the corporate
power and  authority  to own or lease all of its  properties  and  assets and to
carry on its  business  as it is now being  conducted,  and is duly  licensed or
qualified  to do  business  in each  jurisdiction  in which  the  nature  of the
business  conducted  by it or the  character or location of the  properties  and
assets owned or leased by it makes such  licensing or  qualification  necessary.
The Amended and Restated  Certificate of Incorporation  and Amended and Restated
Bylaws of S1, copies of which have  previously  been made available to FICS, are
true,  correct and complete copies of such documents as in effect as of the date
of this Agreement.

                  (c)  S1  owns,   directly  or   indirectly,   the  issued  and
outstanding shares of capital stock of S1 Holdings, free and clear of all liens,
charges,  encumbrances and



                                       23
<PAGE>

security interests  whatsoever,  and all of such shares shall be duly authorized
and validly issued and shall be fully paid, nonassessable and free of preemptive
rights,  with no personal  liability  attaching  to the  ownership  thereof.  S1
Holdings  is not  bound by any  outstanding  subscriptions,  options,  warrants,
calls,  commitments  or agreements of any character  calling for the purchase or
issuance  of any  shares of capital  stock or any other  equity  security  of S1
Holdings or any  securities  representing  the right to  purchase  or  otherwise
receive any shares of capital stock or any other equity security of S1 Holdings.

          4.2. AUTHORITY; NO VIOLATION.

                  (a) S1 Holdings  has full  corporate  power and  authority  to
execute  and  deliver  this  Agreement  and  to  consummate   the   transactions
contemplated  hereby. No other corporate  proceedings on the part of S1 Holdings
are  necessary  to approve  this  Agreement or to  consummate  the  transactions
contemplated  hereby.  This  Agreement  has been duly and validly  executed  and
delivered by S1 Holdings and (assuming due authorization, execution and delivery
by S1 and FICS) will  constitute  valid and binding  obligations of S1 Holdings,
enforceable  against  S1  Holdings  in  accordance  with its  terms,  except  as
enforcement may be limited by general  principles of equity whether applied in a
court of law or a court of equity and by bankruptcy,  insolvency and similar law
affecting creditors' rights and remedies generally.

                  (b) S1 has full  corporate  power and authority to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby.
The  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions  contemplated  hereby  have been duly and  validly  approved by the
Board of Directors of S1. Except for required  approvals of S1  stockholders  by
the requisite vote of S1's stockholders,  no other corporate  proceedings on the
part of S1 (except for  matters  related to setting  the date,  time,  place and
record date for the special  meeting) are necessary to approve this Agreement or
to consummate the transactions contemplated hereby. This Agreement has been duly
and validly  executed  and  delivered  by S1 and  (assuming  due  authorization,
execution and delivery by FICS and each of the Sellers) will  constitute a valid
and binding  obligation of S1,  enforceable  against S1 in  accordance  with its
terms,  except as  enforcement  may be limited by general  principles  of equity
whether  applied  in a court  of law or a court  of  equity  and by  bankruptcy,
insolvency and similar law affecting creditors' rights and remedies generally.

                  (c) Neither the execution and delivery of this Agreement by S1
or S1 Holdings  nor the  consummation  by S1 or S1 Holdings of the  transactions
contemplated hereby or thereby,  nor compliance by S1 or S1 Holdings with any of
the terms or provisions hereof or thereof, will (i) violate any provision of (x)
the Amended and Restated  Certificate of  Incorporation  or Amended and Restated
Bylaws of S1 or (y) the Articles of Association of S1 Holdings, or (ii) assuming
that the consents and  approvals  referred to in Section 4.4 are duly  obtained,
(x) violate any Laws applicable



                                       24
<PAGE>

to S1 or S1  Holdings  or any of their  properties  or assets,  or (y)  violate,
conflict with, result in a breach of any provision of or the loss of any benefit
under, constitute a default (or an event which, with notice or lapse of time, or
both, would constitute a default) under, result in the termination of or a right
of termination or cancellation under, accelerate the performance required by, or
result in the creation of any lien, pledge,  security interest,  charge or other
encumbrance upon any of the respective properties or assets of S1 or S1 Holdings
under any of the terms,  conditions or provisions of any note,  bond,  mortgage,
indenture,  deed of trust,  license,  lease,  agreement or other  instrument  or
obligation  to which  S1 or S1  Holdings  is or will  be,  as the case may be, a
party, or by which S1 or S1 Holdings or any of their properties or assets may be
bound or affected.

          4.3. CONSENTS AND APPROVALS.

                  (a) Except as set forth at  Schedule  4.3(a),  no  consents or
approvals of or filings or registrations  with any  Governmental  Entity or with
any third party are necessary in connection  with (1) the execution and delivery
by S1 or S1 Holdings of this  Agreement,  and (2) the  consummation by S1 and S1
Holdings of the  Transaction  and the other  transactions  contemplated  hereby,
except for such  consents,  approvals  or filings the failure of which to obtain
will not have a Material  Adverse  Effect on the ability of S1 or S1 Holdings to
consummate the transactions contemplated thereby.

         (b) S1 hereby represents to the Sellers that it has no knowledge of any
reason why  approval or  effectiveness  of any of the  applications,  notices or
filings  referred to in Section 4.3(a) cannot be obtained or granted on a timely
basis.

                                    ARTICLE V
                    COVENANTS RELATING TO CONDUCT OF BUSINESS

          5.1. COVENANTS RELATING TO FICS.

         During the period from the date of this Agreement and continuing  until
the Closing,  except as expressly contemplated or permitted by this Agreement or
with the prior written consent of S1 Holdings,  the Sellers shall cause FICS and
each FICS  Subsidiary  to carry on their  respective  businesses in the ordinary
course  consistent with past practices.  The Sellers shall cause FICS to use its
reasonable  efforts to (x) preserve its business  organization  and that of each
FICS Subsidiary intact, (y) keep available to itself and S1 Holdings the present
services of the employees of FICS and each FICS  Subsidiary and (z) preserve for
itself and S1  Holdings  the  goodwill  of the  customers  of FICS and each FICS
Subsidiary and others with whom business  relationships  exist. Without limiting
the generality of the foregoing,  and except as set forth in the FICS Disclosure
Schedule or as otherwise  contemplated  by this  Agreement or consented to by S1
Holdings in writing,  the Sellers  shall not permit FICS or any FICS  Subsidiary
to:



                                       25
<PAGE>

                  (a)   declare  or  pay  any   dividends   on,  or  make  other
distributions in respect of, any of its capital stock;

                  (b) (i) split, combine or reclassify any shares of its capital
stock or issue,  authorize  or propose the issuance of any other  securities  in
respect of, in lieu of or in  substitution  for shares of its capital stock,  or
(ii) repurchase, redeem or otherwise acquire, any shares of the capital stock of
FICS or any FICS Subsidiary,  or any securities  convertible into or exercisable
for any shares of the capital stock of FICS or any FICS Subsidiary;

                  (c)  issue,  deliver or sell,  or  authorize  or  propose  the
issuance, delivery or sale of, any shares of its capital stock or any securities
convertible  into or  exercisable  for,  or any  rights,  warrants or options to
acquire, any such shares, or enter into any agreement with respect to any of the
foregoing;

                  (d) amend its Restated  Articles of Association  (Statuten) or
other similar governing documents;

                  (e) after the date hereof, directly or indirectly, through any
officer, director, employee, agent or otherwise,  solicit, initiate or encourage
submission of proposals or offers from any person relating to any acquisition or
purchase  of all or a  substantial  portion  of the  assets  of,  or any  equity
interest in, FICS or any business combination with FICS (collectively,  all such
events referred to herein as a "Competing  Offer"),  or otherwise enter into any
agreement  or  understanding  with  respect  to a  Competing  Offer  (Under  any
circumstances,  the Sellers  shall cause FICS to promptly  advise S1 Holdings if
any such  proposal  or offer,  or any  inquiry or contact  with any person  with
respect thereto, is made, shall promptly inform S1 Holdings of all the terms and
conditions thereof,  and shall furnish to S1 Holdings copies of any such written
proposal  or offer and the  contents of any  communications  by FICS in response
thereto.);

                  (f) make any capital expenditure in excess of $100,000;

                  (g) enter  into any new line of  business,  or,  except in the
ordinary course of business, (i) enter into any material contract (as defined in
Item  601(b)(10)  of  Regulation  S-K), or other  contract  requiring  aggregate
payments exceeding $100,000,  or (ii) modify,  amend or transfer in any material
respect  or  terminate  any  material  contract  to  which  FICS  or  any of its
Subsidiaries  is a party or waive,  release  or assign  any  material  rights or
claims thereunder;

                  (h) acquire or agree to acquire,  by merging or  consolidating
with, or by  purchasing an equity  interest in or the assets of, or by any other
manner,  any  business or any  corporation,  partnership,  association  or other
business organization or division thereof or otherwise acquire any assets, other
than in the ordinary course of business;



                                       26
<PAGE>


                  (i) take any action  that is  intended  or may  reasonably  be
expected to result in any of its  representations  and  warranties  set forth in
this  Agreement  being or  becoming  untrue or in any of the  conditions  to the
Transaction set forth in Article VII not being  satisfied,  or in a violation of
any provision of this  Agreement,  except,  in every case, as may be required by
applicable law;

                  (j) change its methods of accounting in effect at December 31,
1998 except as required by changes in applicable law or accounting standards, as
concurred to by S1 Holdings' independent auditors;

                  (k) (i) except as required by applicable  law,  adopt,  amend,
renew or terminate any FICS Plan or any agreement,  arrangement,  plan or policy
between  FICS or any FICS  Subsidiary  and one or more of its  current or former
directors  or  officers,  (ii)  increase in any manner the  compensation  of any
employee or director or pay any benefit not required by any plan or agreement as
in effect as of the date hereof (including,  without limitation, the granting of
stock options,  stock appreciation  rights,  restricted stock,  restricted stock
units or  performance  units or shares),  (iii) enter into,  modify or renew any
contract, agreement,  commitment or arrangement providing for the payment to any
director,  officer or employee of  compensation  or benefits,  other than normal
annual  increases  in pay,  consistent  with  past  practice,  (iv) hire any new
employee at an annual compensation in excess of $100,000,  (v) promote to a rank
of vice president or more senior any employee,  or (vi) other than in compliance
with  agreements  in force as of the date  hereof,  pay any  retention  or other
bonuses to any employees;

                  (l) except for  short-term  borrowings  with a maturity of one
year or less in the ordinary course of business  consistent with past practices,
incur any  indebtedness  for  borrowed  money,  assume,  guarantee,  endorse  or
otherwise as an  accommodation  become  responsible  for the  obligations of any
other individual, corporation or other entity;

                  (m) sell,  purchase,  enter  into a lease,  relocate,  open or
close any office,  other than in the ordinary course of business consistent with
past practices;

                  (n) make any equity  investment  or commitment to make such an
investment in real estate;

                  (o) make any investments, other than in the ordinary course of
business consistent with past practices;

                  (p)      sell, purchase or lease any real property; or

                  (q) agree or commit to do any of the  actions set forth in (a)
- - (p) above.



                                       27
<PAGE>

The consent of S1 Holdings to any action by FICS or any FICS  Subsidiary that is
not permitted by any of the preceding paragraphs shall be evidenced by a writing
signed by an authorized representative of S1 Holdings.

          5.2. COVENANTS OF SELLERS.

                  (a)  After  the date  hereof,  no Seller  shall,  directly  or
indirectly,  solicit,  initiate or encourage  submission  of proposals or offers
from any person  relating  to any  Competing  Offer with  respect to FICS.  Each
Seller shall  promptly  advise S1 Holdings if any such Competing  Offer,  or any
inquiry or contact with any person with respect thereto, is made, shall promptly
inform S1 Holdings of all the terms and conditions thereof, and shall furnish to
S1 Holdings copies of any such written proposal or offer and the contents of any
communications in response thereto.

                  (b) After the date  hereof,  each  Seller  hereby  waives  and
refuses any right to purchase, acquire or otherwise obtain any equity securities
of FICS pursuant to the Restated Articles of Association of FICS, any preemptive
right to acquire such securities, the FICS Stock Plan or otherwise.

          5.3. COVENANTS OF S1.

         S1  unconditionally  guarantees  (as a  principal  and not  merely as a
surety) each and all of the obligations of S1 Holdings under this Agreement.  S1
hereby agrees and  covenants to take all necessary  actions to cause S1 Holdings
to perform its obligations in accordance with this Agreement.  S1 further agrees
for at  least  three  years  from  the last of the  Payment  Dates  that it will
maintain S1 Holdings as a  subsidiary  and that S1 Holdings  will be operated as
the holding company for S1's European  operations,  providing treasury and other
services to FICS,  the FICS  Subsidiaries  and any other  European  entity which
becomes a subsidiary of S1 Holdings.  S1 further agrees with each of the Sellers
that, for at least three years from the last of the Payment Dates, it will cause
S1 Holdings not to sell or directly or indirectly  transfer or assign (including
transfers  in case of a merger or  split-up)  the FICS  Securities.  S1 Holdings
agrees that for at least  three years from the last of the Payment  Dates (i) it
will  operate as the holding  company for S1's  European  operations,  providing
treasury  and  other  services  to FICS,  the FICS  Subsidiaries  and any  other
European entity which becomes a subsidiary of S1 Holdings,  and (ii) it will not
sell or directly or indirectly  transfer or assign (including  transfers in case
of a merger or split-up) the FICS Securities. S1 further agrees from the Closing
Date  until at least  the  Third  Payment  Date,  if any,  that it will  provide
resources for the operations of FICS consistent with the operating budget of S1,
as determined by the Board of Directors of S1 in accordance with Annex A.


                                       28
<PAGE>

          5.4. COMPLIANCE WITH ANTITRUST LAWS.

         Each of the parties hereto shall make all filings of any  applications,
notices or other documents required under applicable  antitrust Laws and use its
reasonable  best efforts to resolve  objections,  if any,  which may be asserted
with  respect  to the  Transaction  under  antitrust  laws,  including,  without
limitation,  the  Hart-Scott-Rodino Act and any foreign competition laws. In the
event  a suit  is  threatened  or  instituted  challenging  the  Transaction  as
violative of antitrust laws, each of the parties hereto shall use its reasonable
best efforts to avoid the filing of, or resist or resolve such suit. The parties
hereto  shall use their  reasonable  best  efforts to take such action as may be
required:  (a) by the  Antitrust  Division of the  Department  of Justice or the
Federal Trade  Commission in order to resolve such  objections as either of them
may have to the Transaction under antitrust laws, or (b) by any federal or state
court  of  the  United  States,  in any  suit  brought  by a  private  party  or
governmental  entity challenging the Transaction as violative of antitrust laws,
in order to avoid the entry of, or to effect the dissolution of, any injunction,
temporary  restraining  order, or other order which has the effect of preventing
the  consummation  of the  Transaction or by any foreign entity that may require
prior approval of the  Transaction.  Reasonable  best efforts shall not include,
among other  things and to the extent S1 so desires,  the  willingness  of S1 to
accept an order agreeing to the  divestiture,  or the holding  separate,  of any
assets of FICS or S1.

                                   ARTICLE VI
                              ADDITIONAL AGREEMENTS

          6.1. REGULATORY MATTERS.

                  (a) The parties hereto shall cooperate with each other and use
their  reasonable  best  efforts  to  promptly  prepare  and file all  necessary
documentation,  to effect all applications,  notices, petitions and filings, and
to obtain as  promptly as  practicable  all  permits,  consents,  approvals  and
authorizations  of  all  third  parties  and  Governmental  Entities  which  are
necessary or advisable  to  consummate  the  transactions  contemplated  by this
Agreement.  S1  Holdings  and the  Sellers  shall  have the  right to  review in
advance,  and to the extent  practicable each will consult the other on, in each
case subject to applicable laws relating to the exchange of information, all the
information  relating to S1 Holdings or FICS,  as the case may be, which appears
in any filing made with, or written  materials  submitted to, any third party or
any Governmental Entity in connection with the transactions contemplated by this
Agreement;  provided,  however, that nothing contained herein shall be deemed to
provide  either  party with a right to review any  information  provided  to any
Governmental  Entity on a confidential basis in connection with the transactions
contemplated  hereby.  In exercising  the foregoing  right,  each of the parties
hereto shall act reasonably and as promptly as  practicable.  The parties hereto
agree that they will consult  with each other with  respect to the  obtaining of
all permits,



                                       29
<PAGE>

consents,  approvals and  authorizations  of all third parties and  Governmental
Entities  necessary or advisable to consummate the transactions  contemplated by
this  Agreement  and each  party will keep the other  apprised  of the status of
matters relating to consummation of the transactions contemplated herein.

                  (b) The Sellers shall cause FICS to, upon request,  furnish S1
Holdings with all information  concerning  FICS and its directors,  officers and
shareholders and such other matters as may be reasonably  necessary or advisable
in connection with any statement,  filing,  notice or application  made by or on
behalf  of S1  Holdings  to any  Governmental  Entity  in  connection  with  the
Transaction or the other transactions contemplated by this Agreement.

                  (c) S1 Holdings  and the Sellers  shall  promptly  advise each
other upon  receiving  any  communication  from any  Governmental  Entity  whose
consent  or  approval  is  required  for   consummation   of  the   transactions
contemplated  by this Agreement which causes such party to believe that there is
a reasonable  likelihood  that any  Requisite  Regulatory  Approval  (defined in
Section  7.1(b)  hereof)  will not be  obtained  or that the receipt of any such
approval will be materially delayed.

          6.2. ACCESS TO INFORMATION.

                  (a) Upon  reasonable  notice and  subject to  applicable  Laws
relating to the exchange of information,  the Sellers shall cause FICS to accord
to the officers, employees, accountants, counsel and other representatives of S1
Holdings,  access,  during normal  business hours during the period prior to the
Closing,  to all  FICS's and its  Subsidiaries'  properties,  books,  contracts,
commitments and records and, during such period, FICS shall make available to S1
Holdings (i) a copy of each report, schedule, Proxy Statement and other document
filed or received by it (including its Subsidiaries) during such period pursuant
to the  requirements  of federal  securities laws or other federal or state Laws
and (ii) all other  information  concerning  its  (including  its  Subsidiaries)
business, properties and personnel as S1 Holdings may reasonably request (except
as to information deemed confidential or competitively sensitive  ("Confidential
Matters"))  and such  meetings  of  committees  of the  Board of  Directors  and
management of FICS which S1 Holdings  desires.  S1 Holdings shall receive notice
of all meetings of the FICS Board of Directors and any committees  thereof,  and
of any  management  committees  (in all  cases,  at least as  timely as all FICS
representatives  to such  meetings  are  required  to be  provided  notice).  S1
Holdings will hold all such information in confidence to the extent required by,
and in accordance  with,  the  provisions of the  Confidential  Information  and
Non-disclosure  Agreement  between FICS,  Edify  Corporation and S1 (by which S1
Holdings  unconditionally  agrees to be bound by signing this  Agreement)  dated
April 27, 1999 and the  Confidential  Information and  Non-disclosure  Agreement
between  FICS  and S1 dated  March  31,  1999  (together,  the  "Confidentiality
Agreements").  The  parties  agree  and  acknowledge  that  the  Confidentiality
Agreements  will  continue  in full  force and effect in  accordance  with their
terms.



                                       30
<PAGE>

                  (b) Upon  reasonable  notice and  subject to  applicable  Laws
relating  to the  exchange  of  information,  S1  Holdings  shall  afford to the
officers,  employees,  accountants,  counsel and other  representatives of FICS,
access,  during normal business hours during the period prior to the Closing, to
such information  regarding S1 Holdings,  except as to Confidential  Matters, as
shall be reasonably  necessary for FICS to fulfill its  obligations  pursuant to
this Agreement or which may be reasonably necessary for FICS to confirm that the
representations  and  warranties  of S1 Holdings  contained  herein are true and
correct  and that the  covenants  of S1  Holdings  contained  herein  have  been
performed in all  material  respects.  The Sellers  shall cause FICS to hold all
such  information  in  confidence  to the extent  required by, and in accordance
with, the provisions of the Confidentiality Agreement.

                  (c) No  investigation  by  either  of  the  parties  or  their
respective  representatives  shall affect the  representations and warranties of
the other set forth herein.

                  (d) The Sellers  shall cause FICS to provide S1 Holdings  with
true,  correct  and  complete  copies of all  financial  and  other  information
provided  to  directors  of FICS in  connection  with  meetings of its Boards of
Directors or committees thereof.

          6.3. SHAREHOLDER MEETING.

         S1 shall take all steps necessary to duly call, give notice of, convene
and hold a meeting of its shareholders  within 45 days after the proxy statement
to be used for such  meeting is  approved  by the SEC for use for the purpose of
voting  upon  the  approval  of  this  Agreement,  this  Transaction  and  other
transactions related to this Agreement. Management and the Board of Directors of
S1 shall recommend approval of each of this Agreement and the Transaction.

          6.4. RESERVED.

          6.5. FICS YEAR 2000 OFFICER.

         No later than 20 business days  following  the date of this  Agreement,
the  Sellers  shall  cause  FICS to  appoint  an  officer  (the "Y2K  Officer"),
reasonably  acceptable to S1 Holdings,  which officer shall be  responsible  for
coordinating  matters  related  to any  year  2000  issues  of FICS and any FICS
Subsidiary.  Such Y2K Officer shall, among other things,  coordinate the efforts
of FICS and each FICS  Subsidiary and take those steps  necessary to ensure that
their  products  (including  existing  products and  technology and products and
technology  currently  under  development)  will,  when used in accordance  with
associated  documentation on a specified platform or platforms,  be capable upon
installation of accurately processing,  providing, and receiving date data from,
into, and between the twentieth and twenty-first centuries,  including the years
1999 and  2000, and


                                       31
<PAGE>

making  leap-year  calculations,  provided  that  all  other  non-FICS  or  FICS
Subsidiary  products  (e.g.,  hardware,  software  and  firmware)  used in or in
combination with FICS' or its  Subsidiaries'  products,  properly  exchange data
with FICS' and its Subsidiaries products.  Such year 2000 compliance shall, at a
minimum,  meet the standards  and  guidelines  established  by the United States
Federal Financial  Institutions  Examination Council. The Y2K Officer shall also
provide monthly written reports  regarding year 2000 issues of FICS and any FICS
Subsidiary, and resolution thereof, to the management of FICS and S1.

          6.6. SUBSEQUENT INTERIM FINANCIAL STATEMENTS.

                  (a) As soon as reasonably available, but in no event more than
45 days after the end of each fiscal  quarter,  S1 shall make  available to FICS
its  Quarterly  Reports on Form 10-Q,  as filed with the SEC under the  Exchange
Act. S1 shall make  available  to FICS any Current  Reports on Form 8-K promptly
after  filing such  reports  with the SEC. For the purposes of this Section 6.6,
the filing of any such  document  required to be made  available  herein via the
SEC's EDGAR filing system shall be deemed to satisfy the requirements hereof.

                  (b) The  Sellers  shall  cause  FICS,  as  soon as  reasonably
practicable,  but in no event  more than 30 days  after  the end of each  fiscal
quarter,  to  deliver  to  S1  Holdings  its  unaudited  consolidated  financial
statements for such quarter.

                  (c) The  Sellers  shall  cause  FICS,  as  soon as  reasonably
practicable,  but in no event more than 30 days  after the end of each  calendar
month  prior to  Closing,  to deliver to S1 Holdings  its  consolidated  interim
financial statements for such month.

          6.7. ADVICE OF CHANGES.

         S1 Holdings,  S1 and the Sellers,  with respect to FICS, shall promptly
advise  the other  party of any  change or event  that,  individually  or in the
aggregate,  has or would be reasonably  likely to have a Material Adverse Effect
on it or to cause or constitute a material breach of any of its representations,
warranties or covenants contained herein. From time to time prior to the Closing
Date,  each party will  promptly  supplement  or amend its  disclosure  schedule
delivered in  connection  with the  execution  of this  Agreement to reflect any
matter  which,  if existing,  occurring or known at the date of this  Agreement,
would  have  been  required  to be set  forth or  described  in such  disclosure
schedule or which is necessary  to correct any  information  in such  disclosure
schedule which has been rendered  inaccurate thereby. No supplement or amendment
to such disclosure schedule shall have any effect for the purpose of determining
satisfaction of the conditions set forth in Sections 7.2(a) or 7.3(a) hereof, as
the case may be,  or the  compliance  by FICS  with the  covenants  set forth in
Section 5.1 hereof.


                                       32
<PAGE>

          6.8. CURRENT INFORMATION.

                  (a) During the period from the date of this  Agreement  to the
Closing  Date,  the  Sellers  shall  cause  FICS  to  cause  one or  more of its
designated  representatives  to confer on a regular and frequent basis (not less
than  monthly)  with  representatives  of S1 Holdings  and to report the general
status of the ongoing  operations of FICS.  The Sellers will promptly  notify S1
Holdings  of any  material  change in the normal  course of  business  or in the
operation  of  the  properties  of  FICS  and of  any  governmental  complaints,
investigations  or hearings (or  communications  indicating that the same may be
contemplated),  or the  institution or the threat of litigation  involving FICS,
and will keep S1 Holdings fully informed of such events.

                  (b) During the period from the date of this  Agreement  to the
Closing  Date,   S1  Holdings   will  cause  one  or  more  of  its   designated
representatives  to  confer  on a  regular  and  frequent  basis  (not less than
monthly) with  representatives  of FICS and to report the general  status of the
ongoing  operations of S1. S1 Holdings  will promptly  notify the Sellers of any
material  change in the normal  course of  business or in the  operation  of the
properties of S1 and of any governmental complaints,  investigations or hearings
(or  communications  indicating  that  the  same  may be  contemplated),  or the
institution  or the threat of  litigation  involving S1 Holdings or S1, and will
keep the Sellers fully informed of such events.

          6.9. TRANSACTION EXPENSES OF FICS.

                  (a) For  planning  purposes,  the  Sellers  shall  cause FICS,
within 15 days from the date hereof,  to provide S1 Holdings  with its estimated
budget of  transaction-related  expenses reasonably anticipated to be payable by
FICS in  connection  with this  transaction,  including the fees and expenses of
counsel,  accountants,  investment bankers and other professionals.  The Sellers
shall cause FICS to promptly notify S1 Holdings if or when it determines that it
will expect to exceed its budget.

                  (b)  Promptly  after  the  execution  of this  Agreement,  the
Sellers shall cause FICS to ask all of its attorneys and other  professionals to
render  current and correct  invoices for all unbilled  time and  disbursements.
FICS shall  accrue  and/or pay all of such  amounts  which are  actually due and
owing as soon as possible.

                  (c) The Sellers shall cause FICS to advise S1 Holdings monthly
of all  out-of-pocket  expenses which FICS has incurred in connection  with this
transaction.

          6.10. JOINDER OF ADDITIONAL SELLERS.

                  Prior to Closing,  S1 Holdings  hereby  agrees to send, at the
same time and in the same manner as to S1's stockholders, a copy of the S1 Proxy
Statement  (as defined in the S1 Stock  Purchase  Agreement)  and a copy of this
Agreement to each of



                                       33
<PAGE>

the individuals identified by FICS as a stockholder or bondholder of FICS who is
not a party hereto.  Prior to the Closing,  S1 and the Sellers hereby agree that
each of the  stockholders of FICS who is not a party hereto shall be offered the
opportunity to join this  Agreement as a Seller by indicating  acceptance of the
terms of this  Agreement  by a writing  signed by such person  stating that such
person  (i) has read the S1 Proxy  Statement  and  this  Agreement,  (ii)  fully
understands the risks involved in proceeding with the transactions  contemplated
by this Agreement, and (iii) agrees to join this Agreement as a Seller.

                                   ARTICLE VII
                              CONDITIONS PRECEDENT

         7.1. CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE TRANSACTION.

         The respective obligation of each party to effect the Transaction shall
be  subject to the  satisfaction  at or prior to the  Closing  of the  following
conditions:

                  (a)      SHAREHOLDER APPROVALS.

                  This  Agreement  shall  have been  approved  by any  requisite
shareholder vote.

                  (b)      OTHER APPROVALS.

                  All   governmental  and  regulatory   approvals   required  to
consummate  the  transactions  contemplated  hereby shall have been obtained and
shall  remain in full  force and  effect and all  statutory  waiting  periods in
respect  thereof shall have expired or been  terminated  (all such approvals and
the  expiration or  termination  of all such waiting  periods being  referred to
herein  as  the  "Requisite  Regulatory  Approvals").  No  Requisite  Regulatory
Approval shall contain a non-customary condition that S1 Holdings or the Sellers
reasonably determines to be burdensome or otherwise alter the benefits for which
it bargained in this Agreement.

                  (c)      NO INJUNCTIONS OR RESTRAINTS; ILLEGALITY.

                  No order,  injunction  or decree issued by any court or agency
of competent jurisdiction or other legal restraint or prohibition preventing the
consummation  of  the  Transaction  or  any  of  the  other   transactions   (an
"Injunction")  contemplated  by this Agreement  shall be in effect.  No statute,
rule, regulation,  order, injunction or decree shall have been enacted, entered,
promulgated or enforced by any Governmental Entity which prohibits, restricts or
makes illegal consummation of the Transaction.


                                       34
<PAGE>

         7.2.     CONDITIONS TO OBLIGATIONS OF S1 HOLDINGS.

         The obligation of S1 Holdings to effect the Transaction is also subject
to the  satisfaction  or waiver by S1 Holdings at or prior to the Closing of the
following conditions:

               (a) REPRESENTATIONS AND WARRANTIES.

             The representations and warranties of the Sellers set forth in this
Agreement shall be true and correct as of the date of this Agreement and (except
to the extent such  representations  and warranties speak as of an earlier date)
as of the Closing Date as though made on and as of the Closing  Date;  provided,
however,  that  for  purposes  of  this  paragraph,   such  representations  and
warranties  shall be  deemed  to be true and  correct,  unless  the  failure  or
failures  of such  representations  and  warranties  to be so true and  correct,
individually or in the aggregate,  would have a Material Adverse Effect on FICS.
Such  determination  of aggregate  Material  Adverse  Effect shall be made as if
there were no materiality qualifications in such representations and warranties.
S1 Holdings  shall have received a certificate  signed on behalf of FICS by each
of the President and Chief Financial Officer of FICS to the foregoing effect.

               (b) PERFORMANCE OF COVENANTS AND AGREEMENTS OF THE SELLERS

             The Sellers  shall have  performed  in all  material  respects  all
covenants and  agreements  required to be performed by them under this Agreement
at or prior to the Closing Date.  S1 Holdings  shall have received a certificate
signed on behalf of each Seller to such effect.

               (c) CONSENTS UNDER AGREEMENTS.

             The  consent,  approval  or waiver of each  person  (other than the
Governmental  Entities  referred to in Section  7.1(b)  hereof) whose consent or
approval shall be required in order to permit the succession by S1 Holdings,  to
the extent  applicable,  to any obligation,  right or interest of FICS under any
loan or credit agreement,  note,  mortgage,  indenture,  lease, license or other
agreement or instrument  shall have been obtained except for those,  the failure
of which to obtain,  will not result in a Material Adverse Effect on S1 Holdings
or FICS.

               (d) NO PENDING GOVERNMENTAL ACTIONS.

             No  proceeding  initiated  by any  Governmental  Entity  seeking an
Injunction shall be pending.




                                       35
<PAGE>


               (e) NO MATERIAL ADVERSE CHANGE.

             There shall have been no changes,  other than changes  contemplated
by  this  Agreement,  in  the  business,  operations,  condition  (financial  or
otherwise),  assets or liabilities of FICS or any FICS Subsidiary (regardless of
whether or not such events or changes are inconsistent with the  representations
and warranties  given herein) that  individually  or in the aggregate has had or
would have a Material Adverse Effect on FICS.

               (f) ACCOUNTANT'S COMFORT LETTER.

             The Sellers  shall have caused to be  delivered  on the  respective
dates thereof to S1 Holdings "comfort letters" from PricewaterhouseCoopers & Co.
Bedrijfsrevisoren,  FICS'  independent  public  accountants,  dated the date the
Proxy  Statement (or last amendment  thereto) and dated the date of the Closing,
and  addressed  to S1  Holdings,  the  Sellers and FICS,  with  respect to FICS'
financial  data presented in the Proxy  Statement,  which letters shall be based
upon Statements on Auditing Standards Nos. 72 and 76.

               (g) FINANCING

             S1  Holdings   shall  have   obtained   the   necessary   financing
contemplated by Section 1.3(c) above no later than October 15, 1999.

          7.3. CONDITIONS TO OBLIGATIONS OF THE SELLERS

         The obligation of the Sellers to effect the Transaction is also subject
to the satisfaction or waiver by the Majority Sellers at or prior to the Closing
Date of the following conditions:

               (a) REPRESENTATIONS AND WARRANTIES.

             The  representations and warranties of S1 Holdings and S1 set forth
in this Agreement shall be true and correct as of the date of this Agreement and
(except to the extent such representations and warranties speak as of an earlier
date) as of the  Closing  Date as  though  made on and as of the  Closing  Date;
provided, however, that for purposes of this paragraph, such representations and
warranties  shall be  deemed  to be true and  correct,  unless  the  failure  or
failures  of such  representations  and  warranties  to be so true and  correct,
individually  or in the  aggregate,  would have a Material  Adverse Effect on S1
Holdings or S1, as the case may be. Such  determination  of  aggregate  Material
Adverse Effect shall be made as if there were no materiality  qualifications  in
such representations and warranties.  FICS and the Sellers shall have received a
certificate  signed on behalf of S1 Holdings by each of the Managing Director of
S1 Holdings and the President and the Chief Financial  Officer of S1 Holdings to
the foregoing effect.


                                       36
<PAGE>

               (b)  PERFORMANCE  OF COVENANTS AND  AGREEMENTS OF S1 HOLDINGS AND
                    S1.

             S1 Holdings and S1 shall have  performed  in all material  respects
all  covenants  and  agreements  required  to be  performed  by them  under this
Agreement  at or prior to the  Closing  Date.  FICS and the  Sellers  shall have
received a certificate  signed on behalf of S1 Holdings by each of the President
and Chief Financial Officer of S1 Holdings to such effect.

               (c) TAX OPINION.

             General Atlantic  Partners 20, L.P.,  General Atlantic Partners 52,
L.P. and GAP  Coinvestment  Partners,  L.P. shall have received an opinion as to
the  tax-free  nature  of the  transactions  contemplated  hereby,  in form  and
substance reasonably satisfactory to them.

               (d) CONSENTS UNDER AGREEMENTS.

             The consent or  approval  or waiver of each person  (other than the
Governmental  Entities  referred to in Section 7.1(b)) whose consent or approval
shall be required in connection with the transactions  contemplated hereby under
any loan or credit agreement, note, mortgage, indenture, lease, license or other
agreement or  instrument  to which S1 Holdings is a party or is otherwise  bound
shall have been obtained.

               (e) NO PENDING GOVERNMENTAL ACTIONS.

             No  proceeding  initiated  by any  Governmental  Entity  seeking an
Injunction shall be pending.

               (f) NO MATERIAL ADVERSE CHANGE.

             There shall have been no changes,  other than changes  contemplated
by  this  Agreement,  in  the  business,  operations,  condition  (financial  or
otherwise),  assets or  liabilities  of S1 or any S1 Subsidiary  (regardless  of
whether or not such events or changes are inconsistent with the  representations
and warranties  given herein) that  individually  or in the aggregate has had or
would have a Material Adverse Effect on S1.


                                       37
<PAGE>

                                  ARTICLE VIII
                            TERMINATION AND AMENDMENT

          8.1. TERMINATION.

         This Agreement may be terminated at any time prior to the Closing Date,
whether before or after approval of the matters presented in connection with the
Transaction by any of the Majority Sellers, if applicable:

                  (a) by mutual  consent of S1 Holdings  and each of the Sellers
in a written instrument,  if the Board of Directors of S1 Holdings so determines
by a vote of a  majority  of the  members  of its  entire  Board and each of the
Sellers so determines in its individual judgment;

                  (b) by either S1 Holdings or any of the Majority  Sellers upon
written  notice  to the  other  party  (i) 30 days  after  the date on which any
request or  application  for a  Regulatory  Approval  shall have been  denied or
withdrawn at the request or recommendation of the Governmental Entity which must
grant such Regulatory  Approval,  unless within the 30-day period following such
denial  or  withdrawal  the  parties  agree to file,  and  have  filed  with the
applicable   Governmental  Entity,  a  petition  for  rehearing  or  an  amended
application,  provided, however, that no party shall have the right to terminate
this  Agreement  pursuant to this Section  8.1(b),  if such denial or request or
recommendation  for withdrawal  shall be due to the failure of the party seeking
to terminate  this  Agreement to perform or observe the covenants and agreements
of such party set forth herein;

                  (c) by either S1  Holdings or any of the  Majority  Sellers if
the  Transaction  shall not have been  consummated  on or before March 31, 2000,
unless  the  failure  of the  Closing  to occur by such date shall be due to the
failure of the party seeking to terminate  this  Agreement to perform or observe
the covenants and agreements of such party set forth herein;

                  (d) by either S1 Holdings (provided that S1 Holdings is not in
breach of its  obligations  under  Section  6.3  hereof) or any of the  Majority
Sellers if the approval of the S1 shareholders  required for the consummation of
the Transaction  shall not have been obtained by reason of the failure to obtain
the required vote at a duly held meeting of  shareholders  or at any adjournment
or postponement thereof;

                  (e) by  either  S1  Holdings  or any of the  Majority  Sellers
(provided   that  the   terminating   party  is  not  then  in   breach  of  any
representation,  warranty,  covenant or other agreement  contained  herein that,
individually  or in the  aggregate,  would  give the  other  party  the right to
terminate  this  Agreement)  if there  shall  have  been a breach  of any of the
representations  or  warranties  set forth in this  Agreement on the part of the
other party or the Sellers (as to S1 Holdings), if such breach,  individually or
in the aggregate,  has had or is likely to have a Material Adverse Effect



                                       38
<PAGE>

on the breaching party, and such breach shall not have been cured within 30 days
following  receipt by the breaching  party of written notice of such breach from
the other party hereto or such breach,  by its nature,  cannot be cured prior to
the Closing;

                  (f) by  either  S1  Holdings  or any of the  Majority  Sellers
(provided   that  the   terminating   party  is  not  then  in   breach  of  any
representation,  warranty,  covenant or other agreement  contained  herein that,
individually  or in the  aggregate,  would  give the  other  party  the right to
terminate this  Agreement) if there shall have been a material  breach of any of
the covenants or agreements set forth in this Agreement on the part of the other
party,  and such  breach  shall not have  been  cured  within 30 days  following
receipt by the breaching  party of written  notice of such breach from the other
party  hereto  or such  breach,  by its  nature,  cannot  be cured  prior to the
Closing;

                  (g) by either S1  Holdings or any of the  Majority  Sellers at
any time after the termination of the S1 Stock Purchase  Agreement in accordance
with its terms;

                  (h) by any of the Majority  Sellers in the event any requested
advance  that is permitted  by the terms of the Loan  Agreement,  dated the date
hereof,  between FICS and S1, is not made by S1 within five  business days after
FICS makes a written demand therefor; and

          8.2. EFFECT OF TERMINATION.

         In the event of  termination of this Agreement by either S1 Holdings or
the Sellers as provided in Section 8.1 hereof,  this Agreement  shall  forthwith
become void and have no effect except (i) the last sentences of Sections  6.2(a)
and 6.2(b) and Sections 8.2, 9.2 and 9.3 hereof shall survive any termination of
this Agreement,  and (ii) notwithstanding  anything to the contrary contained in
this  Agreement,  no party shall be relieved or released from any liabilities or
damages  arising out of its willful or  intentional  breach of any  provision of
this Agreement.

          8.3. AMENDMENT.

         Subject to  compliance  with  applicable  law,  this  Agreement  may be
amended by the  parties  hereto,  at any time  before or after  approval  of the
matters  presented in connection with the Transaction by the stockholders of S1.
This  Agreement may not be amended  except by an instrument in writing signed on
behalf of each of the parties hereto.

          8.4. EXTENSION; WAIVER.

         At any time prior to the Closing, the parties hereto may, to the extent
legally  allowed,  (a)  extend  the  time  for  the  performance  of  any of the
obligations  or  other  acts



                                       39
<PAGE>

of the other parties hereto,  (b) waive any inaccuracies in the  representations
and warranties  contained herein or in any document  delivered  pursuant hereto,
and (c) waive  compliance  with any of the  agreements or  conditions  contained
herein.  Any  agreement on the part of a party  hereto to any such  extension or
waiver shall be valid only if set forth in a written instrument signed on behalf
of such  party,  but such  extension  or waiver or  failure  to insist on strict
compliance  with an  obligation,  covenant,  agreement  or  condition  shall not
operate as a waiver of, or estoppel  with  respect to, any  subsequent  or other
failure.

                                   ARTICLE IX
                               GENERAL PROVISIONS

          9.1. EXPENSES.

         All costs and expenses  incurred in connection  with this Agreement and
the transactions  contemplated  hereby shall be paid by the party incurring such
expense.

          9.2. NOTICES.

         All notices and other communications  hereunder shall be in writing and
shall be deemed given if delivered personally, mailed by registered or certified
mail  (return  receipt  requested)  or  delivered  by an express  courier  (with
confirmation)  to the  parties  at the  following  addresses  (or at such  other
address for a party as shall be specified by like notice):

                  (a)      if to S1 Holdings, to:
                           S1 Europe Holdings N.V.
                           c/o Hogan & Hartson L.L.P.
                           Avenue des Arts 41
                           1040 Brussels, Belgium
                           Attn.:   Robert F. Stockwell, President

                           with copies (which shall not constitute notice) to:

                           Hogan & Hartson L.L.P.
                           Columbia Square
                           555 Thirteenth Street, N.W.
                           Washington, DC  20004-1109
                           Attn.:   Stuart G. Stein, Esq.

                  and



                                       40
<PAGE>

                           Hogan & Hartson L.L.P.
                           Avenue des Arts 41
                           1040 Brussels, Belgium
                           Attn.:   Claud v.S. Eley, Esq.

                  (b)      if to any Seller, to:

                           The address set forth next to such  Seller's  name in
Section 9.2 of the FICS Disclosure Schedule.

                  (c)      if to S1, to:
                           Security First Technologies Corporation
                           3390 Peachtree Road, NE, Suite 1700
                           Atlanta, Georgia 30326
                           Attn:  Robert F. Stockwell, Chief Financial Officer

                           with a copy (which shall not constitute notice) to:

                           Hogan & Hartson L.L.P.
                           Columbia Square
                           555 Thirteenth Street, N.W.
                           Washington, DC  20004-1109
                           Attn.:   Stuart G. Stein, Esq.

                  (d)      if to FICS, to:
                           FICS Group N.V.
                           Excelsiorlaan 87
                           1930 Zaventem, Belgium
                           Attn.:   Steven Sipowicz, Chief Financial Officer

                           with a copy (which shall not constitute notice) to:

                           Brown, Rudnick, Freed & Gesmer
                           Stanmore House
                           29-30 St. James's Street
                           London SW1A 1HB, England
                           Attn.:   Lawrence A. Levy, Esq.
                                    Colin Hugh Buckley, Esq.


          9.3. INTERPRETATION.

         When a reference is made in this  Agreement  to  Sections,  Exhibits or
Schedules,  such reference shall be to a Section of or an Exhibit or Schedule to
this Agreement  unless otherwise  indicated.  The table of contents and headings
contained in this



                                       41
<PAGE>

Agreement  are for  reference  purposes only and shall not affect in any way the
meaning or  interpretation  of this  Agreement.  Whenever  the words  "include,"
"includes" or "including" are used in this Agreement, they shall be deemed to be
followed by the words "without limitation."

          9.4. COUNTERPARTS.

         This Agreement may be executed in  counterparts,  all of which shall be
considered  one  and  the  same  agreement  and  shall  become   effective  when
counterparts  have been signed by each of the parties and delivered to the other
parties,   it  being  understood  that  all  parties  need  not  sign  the  same
counterpart.

          9.5. ENTIRE AGREEMENT.

         This Agreement (including the disclosure  schedules,  documents and the
instruments  referred to herein) constitutes the entire agreement and supersedes
all prior  agreements  and  understandings,  both  written  and oral,  among the
parties   with   respect  to  the  subject   matter   hereof,   other  than  the
Confidentiality Agreement.

          9.6. GOVERNING LAW.

         This Agreement  shall be governed and construed in accordance  with the
laws of Delaware, without regard to any applicable conflicts of law rules.

          9.7. ENFORCEMENT OF AGREEMENT.

         The parties  hereto  agree that  irreparable  damage would occur in the
event that the  provisions  of this  Agreement  were not performed in accordance
with its specific terms or were  otherwise  breached.  It is accordingly  agreed
that the parties shall be entitled to an injunction  or  injunctions  to prevent
breaches of this Agreement and to enforce  specifically the terms and provisions
thereof in any court of the United States or any state having jurisdiction, this
being in  addition to any other  remedy to which they are  entitled at law or in
equity.

          9.8. SEVERABILITY.

         Any  term  or  provision  of  this   Agreement   which  is  invalid  or
unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective
to the extent of such invalidity or  unenforceability  without rendering invalid
or  unenforceable  the  remaining  terms and  provisions  of this  Agreement  or
affecting  the validity or  enforceability  of any of the terms or provisions of
this Agreement in any other jurisdiction.  If any provision of this Agreement is
so broad as to be  unenforceable,  the provision shall be interpreted to be only
so broad as is enforceable.



                                       42
<PAGE>


          9.9. PUBLICITY.

         Except as  otherwise  required  by  applicable  law or the rules of the
Nasdaq Stock Market  National Market System (or such other exchange on which any
capital  stock of S1 Holdings  or any parent or  subsidiary  of S1 Holdings  may
become listed), EASDAQ or the Belgian Banking and Finance Commission, so long as
this Agreement is in effect, neither S1 Holdings nor FICS shall, or shall permit
any of S1  Holdings,  FICS or any of their  Subsidiaries  to, issue or cause the
publication of any press release or other public  announcement  with respect to,
or otherwise make any public statement concerning, the transactions contemplated
by this  Agreement  without the consent of the other party,  which consent shall
not be unreasonably withheld.

          9.10. ASSIGNMENT; LIMITATION OF BENEFITS.

         Neither this Agreement nor any of the rights,  interests or obligations
hereunder  shall be assigned by any of the parties hereto  (whether by operation
of law or  otherwise)  without the prior written  consent of the other  parties.
Subject to the preceding sentence, this Agreement will be binding upon, inure to
the benefit of and be enforceable by the parties and their respective successors
and assigns.  Except as otherwise  specifically  provided in Section 6.7 hereof,
this Agreement  (including the documents and instruments  referred to herein) is
not intended to confer upon any person other than the parties  hereto any rights
or remedies  hereunder,  and the covenants,  undertakings and agreements set out
herein shall be solely for the benefit of, and shall be enforceable only by, the
parties hereto and their permitted assigns.

          9.11. ADDITIONAL DEFINITIONS.

         References to "$" in this  Agreement are to United States  dollars.  In
addition to any other  definitions  contained in this  Agreement,  the following
words,  terms and phrases  shall have the  following  meanings when used in this
Agreement.

         "knowledge":  with  respect to any entity,  refers to the  knowledge of
such entity's  directors and officers in the ordinary  course of their duties in
such positions.

         "Laws": any and all statutes,  laws,  ordinances,  rules,  regulations,
orders, permits,  judgments,  injunctions,  decrees, case law and other rules of
law enacted, promulgated or issued by any Governmental Entity.

         "Material  Adverse  Effect":  with respect to S1 Holdings,  S1 or FICS,
means a condition, event, change or occurrence that is reasonably likely to have
a  material  adverse  effect  upon  (A)  the  financial  condition,  results  of
operations,  business or  properties  of the  relevant  entity  (other than as a
result  of  changes  in laws or  regulations  or  accounting  rules  of  general
applicability or  interpretations  thereof),  or (B) the ability of the relevant
entity to perform its  obligations  under,  and to



                                       43
<PAGE>


consummate the transactions  contemplated by, this Agreement. In addition to the
foregoing,  with respect to FICS only,  if the  Transaction  shall not have then
been consummated and FICS's "revenue" for either (i) the third fiscal quarter of
1999 is below  $10,000,000,  or (ii) the fourth fiscal  quarter of 1999 is below
$12,000,000,  then a Material  Adverse  Effect  shall  have been  deemed to have
occurred.

         For the purpose of the foregoing  sentence,  the term  "revenue"  shall
equal all amounts  properly  reported as such under U.S.  GAAP,  except that any
revenue attributable to operations of FICS other than in accordance with Section
5.1 hereof shall not be deemed to be "revenue."

          9.12. SURVIVAL.

         None of the  representations,  warranties,  covenants and agreements of
the  Sellers,  FICS  or S1 in  this  Agreement  or in any  instrument  delivered
pursuant  to this  Agreement  shall  survive the  Transaction,  except for those
covenants and agreements contained herein and therein which by their terms apply
in whole or in part after the Transaction.

          9.13. CUMULATIVE REMEDIES.

         The remedies provided herein shall be cumulative and shall not preclude
the assertion of any other rights or the seeking of any other remedies,  whether
at law or in equity,  by any party hereto.  In no event may any claim be brought
hereunder by any party against FICS.

          9.14. RELEASE OF CLAIMS.

         Each  Seller,  for  himself  or  itself,  and for his or its  heirs and
assigns or his or its  successors  and  assigns,  hereby  agrees  that as of the
Transaction he, she or it shall remise,  release,  acquit and forever  discharge
FICS and each FICS Subsidiary and all present or former officers,  directors and
employees of FICS and each FICS Subsidiary in their capacities as such, and each
of them,  from any and all  actions  and causes of action  (whether at law or in
equity), losses, damages, costs, expenses,  liabilities,  obligations and claims
or demands of any kind, including, without limitation, attorneys' fees and other
legal costs and expenses, known or unknown, foreseen and unforeseen, whether now
existing  or arising at any time in the  future;  provided,  however,  that this
release  shall not apply to rights and  claims of a Seller  for  indemnification
from FICS where the Seller is made a party to a proceeding  because he or it was
an officer or director of FICS and to rights and claims of a Seller against FICS
as  necessary to allow the Seller to make claims  under any  insurance  policies
maintained by FICS. Notwithstanding,  and without limiting the generality of the
foregoing,  each  Seller  further  agrees that he, she or it waives any



                                       44
<PAGE>

right of contribution or indemnification  against FICS with respect to any claim
to Damages asserted against the such Seller pursuant to this Agreement.

                                    ARTICLE X
                                 INDEMNIFICATION

          10.1. INDEMNIFICATION OF THE SELLERS.

         S1 Holdings  agrees to indemnify,  defend and hold harmless the Sellers
at all times after the Transaction from and against any and all claims, damages,
losses,  liabilities,  payments,  costs,  obligations  and expenses  (including,
without  limitation,  all  legal,  accounting  and other  professional  fees and
disbursements)  (collectively,  "Damages")  to the extent such Damages arise out
of, result from or relate to:

                  (a) a breach in any respect of any  representation or warranty
made by S1 Holdings contained in this Agreement; or

                  (b) a breach in any  respect  of any  covenant,  agreement  or
undertaking made by S1 Holdings in this Agreement or in any certificate or other
instrument  or agreement  delivered  by or on behalf of S1 Holdings  pursuant to
this Agreement.

          10.2. CLAIM FOR INDEMNIFICATION.

         Any claim for  indemnification  made under  Section 10.1 hereof must be
made by a written notice to S1 Holdings. Such notice shall specify in reasonable
detail  the  particulars  of the claim for  indemnity  and the basis  upon which
indemnity is claimed.

          10.3. THIRD PARTY CLAIMS.

         Each party shall  cooperate with the other in determining  the validity
of any third party claim or assertion and in defending the validity of any third
party claim or assertion and in defending  against third parties with respect to
the same. The party seeking indemnification  ("Claimant") shall promptly furnish
to S1 Holdings (for the purposes of this Section 10.3, the "Respondent")  copies
of all notices,  pleadings and other  documents  with respect to any third party
claim for which indemnification is sought, provided, however, that failure to so
notify the Respondent  will relieve the Respondent  from any liability which the
Claimant may have  hereunder,  if but only if, and only to the extent that, such
failure to notify the Respondent  results in loss or damage to the Respondent or
the  forfeiture by the Respondent of  substantial  rights or defenses  otherwise
available  to the  Respondent  with  respect to such claim.  The defense of such
litigation  and  choice of  counsel  with  respect  thereto  shall be within the
control of the Claimant (and the fees and



                                       45
<PAGE>


reimbursements  of counsel for Claimant in connection with such defense shall be
at the Claimant's sole expense),  unless the  Respondent,  no later than 10 days
before an answer or other  pleading  must be  served,  elects to  undertake  the
defense of such claim.  The  Respondent  shall always have the right to elect to
participate  in the defense of any such third  party claim at its sole  expense.
Each of the  parties  agrees not to settle or  compromise  any third party suit,
claim or  proceeding  with  respect  to which  any of the other  parties  has an
obligation to indemnify without the prior written consent of such other parties,
which consent shall not be unreasonably withheld,  provided such other party has
acknowledged the obligation to indemnify.

                            [SIGNATURE PAGES FOLLOW]



                                       46
<PAGE>



         IN WITNESS  WHEREOF,  the Sellers  have  executed  and  delivered  this
Agreement,  and S1  Holdings,  S1 and FICS  have  caused  this  Agreement  to be
executed and delivered by their respective  representatives duly authorized, all
as of the date first above written.

                                      S1 EUROPE HOLDINGS N.V.


                                      By:   /s/ Robert F. Stockwell
                                            ---------------------------------
                                            Name:  Robert F. Stockwell
                                            Title: President

                                       47

<PAGE>


THE SELLERS:


/s/ MICHEL AKKERMANS
- ------------------------------
MICHEL AKKERMANS


PAMICA N.V.



By:/s/
   --------------------------------------
   Name:
   Title:


GENERAL ATLANTIC PARTNERS 20, L.P.
By: GENERAL ATLANTIC PARTNERS, LLC, its General Partner

      By: /s/ David C. Hodgson
          -------------------------------
          Name:  David C. Hodgson
          Title: A Managing Member



GENERAL ATLANTIC PARTNERS 52, L.P.
By:  GENERAL ATLANTIC PARTNERS, LLC, its General Partner

      By: /s/ David C. Hodgson
          --------------------------------
          Name:  David C. Hodgson
          Title: A Managing Member



GAP COINVESTMENT PARTNERS, L.P.


      By: /s/  David C. Hodgson
          --------------------------------
          Name:   David C. Hodgson
          Title:  A General Partner



                                       48
<PAGE>

GIMV N.V.

By:  /s/
     -------------------------------------
      Name:
      Title:



- ------------------------------------------
GUY MOONS


- ------------------------------------------
STEVEN VAN ROSSEN


- ------------------------------------------
NADINE QUAEYHAEGENS



/s/ ETIENNE CASTIAUX
- ------------------------------------------
ETIENNE CASTIAUX



/s/ GOORT GELTEN
- ------------------------------------------
GOORT GELTEN


/s/ LOEK VAN DEN BOOG
- ------------------------------------------
LOEK VAN DEN BOOG


/s/ FREDRICK DUMAS
- ------------------------------------------
FREDRICK DUMAS



                                       49
<PAGE>



UNICO PORTFOLIO LTD.



By:  /s/
    --------------------------------------
    Name:
    Title:



                                       50
<PAGE>


SECURITY FIRST TECHNOLOGIES CORPORATION
(for the limited purposes set forth herein)


By:   /s/ James S. Mahan III
      -----------------------------------------------
      Name:      James S. Mahan III
      Title:     Chairman and Chief Executive Officer



FICS GROUP N.V.
(for the limited purposes set forth herein)


By:   /s/
      -----------------------------------------------
      Name:
      Title:





                                       51



<PAGE>




                                    EXHIBIT A
                                       S1

                              STOCKHOLDER AGREEMENT


         This STOCKHOLDER AGREEMENT,  dated as of September 21, 1999, is entered
into by and  among  each of the  stockholders  of FICS  Group  N.V.,  a  Belgian
corporation (naamloze vennootschap  ("N.V.")) ("FICS"),  listed on the signature
page of this Stockholder Agreement (collectively, the "FICS Stockholders"),  and
the  stockholders  of  Security  First  Technologies  Corporation,   a  Delaware
corporation   ("S1"),   named   on   Schedule   I  hereto   (collectively,   the
"Stockholders") who are directors,  executive officers or other affiliates of S1
(for purposes of Rule 145 under the Securities Act of 1933, as amended).

         WHEREAS, S1, the FICS Stockholders,  S1 Europe Holdings N.V., a Belgian
corporation  ("S1  Holdings"),  and FICS have entered  into that  certain  Share
Purchase Agreement II, dated as of September 21, 1999 (the  "Agreement"),  which
is conditioned upon, and requires,  the execution of this Stockholder  Agreement
and  which  provides  for,  among  other  things,  the  acquisition  of  all  or
substantially   all  of  the  capital   stock  of  FICS  by  S1  Holdings   (the
"Transaction"); and

         WHEREAS,  in order to induce  the FICS  Stockholders  to enter  into or
proceed with the  Agreement,  the  Stockholders  represent  and warrant that the
facts  provided  herein are  accurate as to each of the  Stockholders  set forth
herein,  and each of the  Stockholders  agrees to, among other  things,  vote in
favor of the Agreement, the Transaction and the other transactions  contemplated
by the Agreement in his/her capacity as a stockholder of S1.

         NOW,  THEREFORE in consideration of the premises,  the mutual covenants
and agreements set forth herein and other good and valuable  consideration,  the
sufficiency  of  which is  hereby  acknowledged,  the  parties  hereto  agree as
follows:

         1.  OWNERSHIP  OF S1 COMMON  STOCK.  Each  Stockholder  represents  and
warrants that the number of shares of S1 common stock,  par value $.01 per share
("S1 Common Stock"),  set forth opposite such  Stockholder's  name on Schedule I
hereto is the total  number of shares of S1 Common  Stock over which such person
has "beneficial ownership" within the meaning of Rule 13d-3 under the Securities
Exchange  Act  of  1934,  as  amended,   except  that  the  provisions  of  Rule
13d-3(d)(1)(i) shall be considered without any limit as to time.

         2.  AGREEMENTS  OF THE  STOCKHOLDERS.  Each  Stockholder  covenants and
agrees that:

                  (a) Such  Stockholder  shall, at any meeting of the holders of
S1 Common Stock called for the purpose,  vote or cause to be voted all shares of
S1 Common  Stock with  respect to which such  Stockholder  has the right to vote
(whether  owned as of the date  hereof or  hereafter  acquired)  in favor of the
Agreement,  the  Transaction  and the  other  transactions  contemplated  by the
Agreement.

                  (b) Prior to the Closing Date,  except as otherwise  expressly
permitted  hereby,  such  Stockholder  shall  not,  sell,  pledge,  transfer  or
otherwise dispose of his/her shares of S1 Common Stock; provided,  however, that
this Section 2(b) shall not apply to a pledge existing as of the date hereof.

         3. SUCCESSORS AND ASSIGNS. A Stockholder may sell, pledge,  transfer or
otherwise  dispose  of his/her  shares of S1 Common  Stock,  provided  that such
Stockholder  obtains the prior written consent of a number of FICS  Stockholders
that  together own a majority of the capital stock of FICS and that any acquirer
of such S1  Common  Stock  agrees  in  writing  to be bound by this  Stockholder
Agreement.



<PAGE>


         4. SPECIFIC PERFORMANCE; TERMINATION. The parties agree and intend that
this Stockholder  Agreement be a valid and binding agreement enforceable against
the parties  hereto and that damages and other remedies at law for the breach of
this Stockholder Agreement are inadequate.  Each of the Stockholders agrees that
irreparable  damage to the FICS  Stockholders  would occur in the event that the
provisions of this  Stockholder  Agreement were not performed in accordance with
its specific terms or were otherwise breached by any of the Stockholders.  It is
accordingly agreed that the FICS Stockholders shall be entitled to an injunction
or injunctions to prevent breaches of this  Stockholder  Agreement by any of the
Stockholders and to enforce  specifically the terms and provisions hereof in any
court of the  United  States or any state  having  jurisdiction,  this  being in
addition to any other  remedy to which S1 is entitled at law or in equity.  This
Stockholder Agreement may be terminated at any time prior to the consummation of
the Transaction by the mutual written consent of the parties hereto and shall be
automatically  terminated  in the event  that the  Agreement  is  terminated  in
accordance with its terms.

         5. NOTICES. Notices may be provided to the FICS Stockholders and the
Stockholders in the manner  specified in the Agreement,  with all notices to the
Stockholders being provided to them at the addresses set forth at Schedule I.

         6. GOVERNING LAW. This Stockholder Agreement shall be governed by the
laws of the  State of  Delaware,  without  giving  effect to the  principles  of
conflicts of laws thereof.

         7. COUNTERPARTS. This Stockholder Agreement may be executed in one or
more counterparts, all of which shall be considered one and the same and each of
which shall be deemed an original.

         8. HEADINGS.  The section  headings  contained herein are for reference
purposes only and shall not affect in any way the meaning or  interpretation  of
this Stockholder Agreement.

         9. DEFINITIONS. Capitalized terms used but not defined herein have the
meanings ascribed to them in the Agreement.




                                        2
<PAGE>




         IN WITNESS WHEREOF,  each of the FICS Stockholders and the Stockholders
have caused this  Stockholder  Agreement to be executed and  delivered as of the
day and year first above written.

FICS STOCKHOLDERS:




- ---------------------------------------------
MICHEL AKKERMANS


PAMICA N.V.



By:
   ------------------------------------------
   Name:
   Title:




GENERAL ATLANTIC PARTNERS 20, L.P.
By:  GENERAL ATLANTIC PARTNERS, LLC, its General Partner


      By:
           ----------------------------------
           Name:
           Title:



GENERAL ATLANTIC PARTNERS 52, L.P.
By:  GENERAL ATLANTIC PARTNERS, LLC, its General Partner


      By:
         ------------------------------------
         Name:
         Title:


GAP COINVESTMENT PARTNERS, L.P.



By:
    -----------------------------------------
    Name:
    Title:




<PAGE>



GIMV N.V.



By:
    -----------------------------------------
    Name:
    Title:





- ---------------------------------------------
GUY MOONS




- ---------------------------------------------
STEVEN VAN ROSSEN




- ---------------------------------------------
NADINE QUAEYHAEGENS




- ---------------------------------------------
ETIENNE CASTIAUX




- ---------------------------------------------
GOORT GELTEN




- ---------------------------------------------
LOEK VAN DEN BOOG




- ---------------------------------------------
FREDRICK DUMAS

                                        2

<PAGE>


UNICO PORTFOLIO LTD.



By:
   ------------------------------------------
Name:
Title:


                                        3

<PAGE>


THE STOCKHOLDERS:


- -------------------------------------      -------------------------------------


- -------------------------------------      -------------------------------------


- -------------------------------------      -------------------------------------


- -------------------------------------      -------------------------------------


- -------------------------------------      -------------------------------------


- -------------------------------------      -------------------------------------




                                        4
<PAGE>




                                   SCHEDULE I

<TABLE>
<CAPTION>


                                                               Number of Shares of S1 Common
Name and Address of Stockholder                                  Stock Beneficially Owned
- -------------------------------                                -----------------------------
<S>                                                            <C>

James S. Mahan III.................................
Chairman, Chief Executive Officer and President
3390 Peachtree Road
Suite 1700
Atlanta, GA 30326

Robert F. Stockwell................................
Chief Financial Officer and Treasurer
3390 Peachtree Road
Suite 1700
Atlanta, GA 30326

Daniel H. Drechsel.................................
President and Chief Operating Officer of
    S1's operating subsidiary
3390 Peachtree Road
Suite 1700
Atlanta, GA 30326

Robert W. Copelan, D.V.M...........................
Director
Post Office Box 10
Paris, KY 40362

Dorsey R. Gardner..................................
Director
1 International Place
Suite 2401
Boston, MA  02110

Joseph S. McCall...................................
Director
Two Ravinia Drive
Suite 1000
Atlanta, GA 30346

Howard J. Runnion, Jr..............................
Director
420 West 4th Street
Suite 100, NC 35795
Winston-Salem, NC 27101

Jackson L. Wilson..................................
Director
5215 North O'Connor Boulevard
Suite 2100
Irving, TX 75039

</TABLE>


                                       5
<PAGE>

                                   SCHEDULE A


STOCKHOLDERS                                                      PERCENTAGE
- ------------                                                      ----------
Michel Akkermans                                                    43.40
PAMICA N.V.                                                         17.05
General Atlantic Partners 20, L.P.                                  23.99
GAP Coinvestment Partners, L.P.                                      3.41
General Atlantic Partners 52, L.P.                                   .53
GIMV N.V.                                                            6.34
Guy Moons                                                            .27
Steven Van Rossen                                                    .05
Nadine Quaeyhaegens                                                  .14
Etienne Castiaux                                                     .14
Goort Gelten                                                         1.71
Frederick Dumas                                                      .34
Loek van den Boog                                                    .92
UNICO PORTFOLIO Ltd.                                                 1.71
                      TOTAL                                        100.00%






<PAGE>



                                  SCHEDULE 1.3

         For  purposes  of this  Schedule,  the  following  terms shall have the
meanings set out below. For the purposes of this Schedule, any fractional number
shall be rounded to the nearest thousandth.

         The  "2000  Carry-over  Earn-out  Points"  shall  mean  such  number of
Earn-out Points as computed in Section 3 or Section 7 of this Schedule.

         The "2000 Contract  Earn-out Period" shall mean the period beginning on
the date hereof and ending on December 31, 2000.

         The "2001 Contract  Earn-out Period" shall mean the period beginning on
January 1, 2001 and ending on the Third Payment Date.

         The "2000 Contract  Earn-out Points" shall mean such number of Earn-out
Points as computed in Section 5 of this Schedule.

         The "2001 Contract  Earn-out Points" shall mean such number of Earn-out
Points as computed in Section 6 of this Schedule.

         The "2000  Earn-out  Payment"  shall  equal the product of (x) the 2000
Earn-out Points multiplied by (y) $35.75.

         The "2001  Earn-out  Payment"  shall  equal the product of (x) the 2001
Earn-out Points multiplied by (y) $35.75.

         The "2001  Earn-out  Points  Pool"  shall mean such  number of Earn-out
Points remaining after subtracting (i) the 2000 Earn-out Points, (ii) the number
of Earn-out  Points deemed unearned and forfeited at the time of calculating the
number of 2000 Revenue  Earn-out Points and (iii) the 2000  Carry-over  Earn-out
Points from 4,500,000.

         The "2000  Earn-out  Points" shall mean such number of Earn-out  Points
equal to the sum of the 2000  Contract  Earn-out  Points  plus the 2000  Revenue
Earn-out Points.

         The "2001  Earn-out  Points" shall mean such number of Earn-out  Points
equal to the sum of the 2001  Contract  Earn-out  Points  plus the 2001  Revenue
Earn-out Points.

         The "2000 Revenue  Earn-out  Points" shall mean such number of Earn-out
Points as computed in Section 7 of this Schedule.

         The "2001 Revenue  Earn-out  Points" shall mean such number of Earn-out
Points as computed in Section 8 of this Schedule.

<PAGE>


         The "2000 Revenue Shortfall" shall mean the difference between the 2000
Revenue Target and FICS 2000 Revenue.

         The "Earn-out  Payments" shall mean the 2000 Earn-out  Payment together
with the 2001 Earn-out Payment.

         "FICS Fourth Quarter 1999 Revenue" shall mean all revenues generated by
FICS on a consolidated  basis, based upon the year-end audited numbers,  for the
fourth quarter of 1999.

         The "FICS Fourth Quarter 1999 Revenue  Adjustment" shall be computed as
follows:

         o if FICS  Fourth  Quarter  1999  Revenue is  greater  than or equal to
           $14,000,000  but  less  than or  equal to $17,000,000,  then the FICS
           Fourth Quarter 1999 Revenue Adjustment shall be 0.

         o if FICS Fourth  Quarter 1999 Revenue is greater than  $17,000,000  or
           less than $14,000,000, then:

              o if  the  FICS  Fourth  Quarter  1999  Revenue  is  greater  than
                $17,000,000,  then   the   FICS  Fourth  Quarter  1999   Revenue
                Adjustment shall mean (x) the  FICS  Fourth Quarter 1999 Revenue
                minus $17,000,000 divided by (y) 2.

              o if  the  FICS  Fourth   Quarter   1999   Revenue  is  less  than
                $14,000,000,   then  the  FICS  Fourth   Quarter   1999  Revenue
                Adjustment  shall mean (x) the FICS Fourth  Quarter 1999 Revenue
                minus $14,000,000 divided by (y) 2.

         "FICS 2000  Expenses"  shall mean all  expenses  generated by FICS on a
consolidated  basis,  based upon the year-end audited  numbers,  for fiscal year
2000, as adjusted pursuant to Annex A hereto.

         "FICS 2001  Expenses"  shall mean all  expenses  generated by FICS on a
consolidated  basis,  based upon the year-end audited  numbers,  for fiscal year
2001, as adjusted pursuant to Annex A hereto.

         "FICS 2000  Revenue"  shall mean all  revenues  generated  by FICS on a
consolidated  basis,  based upon the year-end audited  numbers,  for fiscal year
2000, as adjusted pursuant to Annex A hereto.

<PAGE>


         "FICS 2001  Revenue"  shall mean all  revenues  generated  by FICS on a
consolidated  basis,  based upon the year-end audited  numbers,  for fiscal year
2001, as adjusted pursuant to Annex A hereto.

         A "Final  Contract"  shall mean any contract which has been executed by
the relevant  Large Customer and S1, or any  subsidiary  thereof,  and which has
been approved in connection with S1's standard contract approval process, as may
be in effect from time to time.

         "Fiscal Year 2000" shall mean the fiscal year ending December 31, 2000.

         "Fiscal Year 2001" shall mean the fiscal year ending December 31, 2001.

         A "Large Customer" is any entity or any subsidiary of any entity listed
on Annex C hereto, or as otherwise agreed to by the Board of Directors of S1.

         A "Large Customer  Contract" shall mean a Final Contract with any Large
Customer for one of the following:  (i) Corporate Internet Banking product, (ii)
S1 data center  operations,  or (iii) Virtual Financial  Manager product,  or as
otherwise agreed to by the Board of Directors of S1.

         "Revenue" or "revenues" shall mean any amounts which should properly be
reported as "revenue" in accordance with U.S. GAAP in the  consolidated  audited
income statement of S1.

                1.  EARN-OUT  POINTS.  The  2000  Earn-out  Points  and the 2001
         Earn-out Points (together,  the "Earn-out  Points") shall be determined
         in  accordance  with  Sections 2 through 9 below;  provided  that,  the
         maximum aggregate number of Earn-out Points shall be 4,500,000.

                2. FICS CONSOLIDATED EXPENSES.  Notwithstanding anything in this
         Schedule  1.3 to the  contrary,  if the FICS 2000  Expenses  exceed the
         consolidated expenses budgeted by the Board of Directors of S1 for FICS
         on a  consolidated  basis by more than 10%, or if FICS does not achieve
         at least 90% of the  consolidated  gross margin specified in the annual
         budget of S1 Board of  Directors,  then at the Second  Payment Date (i)
         the  2000  Revenue  Earn-out  Points  shall  equal  0,  (ii)  the  2000
         Carry-over  Points  shall  equal 0,  (iii) a number of points  equal to
         ((4,500,000  minus the 2000 Contract  Earn-out  Points)  divided by 2),
         shall be deemed  unearned  and  forfeited,  and (iv) the 2001  Earn-out
         Points  shall be  calculated  in the  manner set forth at Section 6 and
         Section 8 below.  Notwithstanding  anything in this Schedule 1.3 to the
         contrary, if FICS 2001 Expenses exceed the

<PAGE>


         consolidated  expenses  budgeted  by the Board of  Directors  of S1 for
         FICS's on a  consolidated  basis by more than 10%,  or if FICS does not
         achieve at least 90% of the consolidated  gross margin specified in the
         annual budget of S1 Board of Directors,  then at the Third Payment Date
         (a) the  2001  Revenue  Earn-out  Points  shall  equal  0,  and (b) any
         remaining  Earn-out Points not earned as 2001 Contract  Earn-out Points
         shall be deemed unearned and forfeited. Nothing in this Section 2 shall
         be construed to affect the ability to earn the 2000  Contract  Earn-out
         Points or the 2001 Contract Earn-out Points.

                3. REVENUE TARGETS.  The applicable  revenue target for FICS for
         fiscal year 2000 shall be $89,000,000 (the "2000 Revenue Target").  The
         applicable  revenue  target  for FICS for  fiscal  year  2001  shall be
         $123,000,000  (the  "2001  Revenue  Target");   provided  that  if  the
         Financial Reporting Services division of FICS is sold or its operations
         are   discontinued   (the   date   of   such   occurrence,   the   "FRS
         Sale/Discontinuation Date") at any time after the date hereof but prior
         to December 31, 2001, then the 2000 Revenue Target and the 2001 Revenue
         Target shall be adjusted pursuant to the following:

         (i)       if the FRS Sale/Discontinuation  Date occurs prior to January
                   1, 2000,  then the 2000  Revenue  Target  shall be reduced by
                   $21,500,000 (the "2000 FRS Revenue Target Reduction  Amount")
                   and the 2001 Revenue  Target shall be reduced by  $30,500,000
                   (the "2001 FRS Revenue Target Reduction Amount");

         (ii)      if the FRS  Sale/Discontinuation  Date occurs after  December
                   31, 1999 but prior to January 1, 2001,  then the 2000 Revenue
                   Target  shall  be  reduced  by the 2000  FRS  Revenue  Target
                   Reduction  Amount on a pro rata  basis  and the 2001  Revenue
                   Target  shall  be  reduced  by the 2001  FRS  Revenue  Target
                   Reduction Amount; or

         (iii)     if the FRS  Sale/Discontinuation  Date occurs after  December
                   31, 2000 but prior to January 1, 2002, then there shall be no
                   adjustment  of the 2000  Revenue  Target and the 2001 Revenue
                   Target shall be reduced by the 2001 Revenue Target  Reduction
                   Amount on a pro rata basis.

         In addition,  the 2000 Revenue  Target and 2001 Revenue  Target will be
         appropriately adjusted to reflect any discontinuation or disposition of
         any operations of FICS approved by the Board of S1.

                4. DISTRIBUTION OF EARN-OUT PAYMENTS.  The 2000 Earn-out Payment
         shall be  distributed  on the Second  Payment  Date.

<PAGE>


         The 2001  Earn-out  Payment shall be  distributed  on the Third Payment
         Date.  The maximum  aggregate  value of the Earn-out  Payments shall be
         $160,875,000.


                5. 2000 CONTRACT  EARN-OUT  POINTS.  A number of Earn-out Points
         equal to  225,000  shall be  deemed  earned  for  each  Large  Customer
         Contract  executed during the 2000 Contract Earn-out Period, up to five
         such Large Customer  Contracts  (such aggregate  number of points,  the
         "2000 Contract Earn-out Points");  provided, however, if more than five
         (but in any case less than ten) Large  Customer  Contracts are executed
         during the 2000  Earn-out  Contract  Period,  then a number of Earn-out
         Points  computed  pursuant  to Section 6 below  shall be deemed  earned
         during the 2001  Contract  Earn-Out  Period  with  respect to each such
         Large Customer Contract executed over five (together,  the "Excess 2000
         Large Customer  Contracts").  For the 2000 Contract Earn-out Period and
         the 2001 Contract Earn-out Period, for purposes hereof, Earn-out Points
         may be earned for executing up to ten Large Customer Contracts,  in the
         aggregate.  Notwithstanding  anything to the contrary  herein,  for the
         purposes hereof, Earn-out Points may be earned only once for each Large
         Customer.

                6. 2001 CONTRACT EARN-OUT POINTS. A number of Earn-out Points as
         computed below shall be deemed earned for each Large Customer  Contract
         executed during the 2001 Contract  Earn-out Period (each, a "2001 Large
         Customer Contract") and shall be distributed on the Third Payment Date.
         The "2001  Contract  Earn-out  Point  Pool"  shall  mean the  number of
         Earn-out  Points  remaining after  subtracting  1,125,000 from the 2001
         Earn-out Point Pool.

         The "2001 Contract Earn-out Point Value" shall be computed as follows:

                    ((2001  Contract  Earn-out  Point Pool divided by (the total
                    number  of 2001  Large  Customer  Contracts  plus the  total
                    number of Excess 2000 Large Customer Contracts)

                    ;provided,  however,  the 2001 Contract Earn-out Point Value
                    shall not exceed 225,000.

         The "2001 Contract Earn-out Points" shall be computed as follows:

                    ((the total number of 2001 Large Customer Contracts plus the
                    total  number  of  Excess  2000  Large  Customer  Contracts)
                    multiplied by the 2001 Contract Earn-out Point Value)

<PAGE>


                7. 2000 REVENUE EARN-OUT POINTS.  For Fiscal Year 2000, a number
         of Earn-out Points may be earned pursuant to the following:

                    ((FICS  2000  Revenue  plus the  FICS  Fourth  Quarter  1999
                    Revenue Adjustment) divided by the 2000 Revenue Target) = Y

                    o if Y is  greater  than or  equal  to  1.000,  then (a) the
                      number of 2000 Revenue Earn-out Points shall equal:

                          ((4,500,000  minus the 2000 Contract  Earn-out Points)
                          divided by 2);

                          (b) the "2000 Carry-over  Earn-out Points" shall equal
                          0; and (c) the  number of  forfeited  Earn-out  Points
                          shall equal 0.

                    o if Y is greater than 0.800, but less than 1.000,  then (a)
                      the number of 2000 Revenue Earn-out Points shall equal:

                          (((Y  minus  0.800)  divided by 0.200)  multiplied  by
                          ((4,500,000  minus the 2000 Contract  Earn-out Points)
                          divided by 2));

                          (b) the "2000 Carry-over  Earn-out Points" shall equal
                          the  following  (and  such  2000  Carry-over  Earn-out
                          Points  shall be earned and  distributed  pursuant  to
                          Section 8 below):

                          (((1.000  minus Y)  divided  by 0.200)  multiplied  by
                          ((4,500,000  minus the 2000 Contract  Earn-out Points)
                          divided by 2));

                          and (c) the number of forfeited  Earn-out Points shall
                          equal 0.

                    o if Y is less than or equal to 0.800,  then (a) the  number
                      of 2000  Revenue  Earn-out  Points  shall equal 0; (b) the
                      "2000   Carry-over   Earn-out   Points"  shall  equal  the
                      following (and such 2000 Carry-over  Earn-out Points shall
                      be earned and distributed pursuant to Section 8 below):

                          (4,500,000  minus the 2000 Contract  Earn-out  Points)
                          divided by 4));

<PAGE>


                          and (c) a  number  of  Earn-out  Points  equal  to the
                          following shall be deemed unearned and forfeited:

                          (4,500,000  minus the 2000 Contract  Earn-out  Points)
                          divided by 4))


                8. 2001 REVENUE EARN-OUT POINTS.  For Fiscal Year 2001, a number
         of Earn-out Points may be earned pursuant to the following:

                    ((FICS  2001  Revenue  plus the  FICS  Fourth  Quarter  1999
                    Revenue Adjustment) divided by the 2001 FICS Revenue Target)
                    = Z

                    ((FICS 2001 Revenue minus 2001 FICS Revenue  Target) divided
                    by the 2000 Revenue  Shortfall) = X; provided  that, X shall
                    be less than or equal to 1.000

                    o if Z is less than or equal to 0.800,  then (a) the  number
                      of 2001 Revenue Earn-out Points shall equal 0; and (b) any
                      remaining  Earn-out Points,  including any 2000 Carry-over
                      Earn-out  Points  shall be  deemed  unearned  and shall be
                      forfeited.

                    o if Z is exactly 1.000, then (a) the number of 2001 Revenue
                      Earn-out Points shall equal:

                         (2001  Earn-out  Point  Pool  minus  the 2001  Contract
                         Earn-out Points);

                         and (b) any remaining  Earn-out  Points,  including any
                         2000  Carry-over  Earn-out  Points,   shall  be  deemed
                         unearned and shall be forfeited.

                    o if Z is greater  than 0.800 but less than 1.000,  then (a)
                      the number of 2001 Revenue Earn-out Points shall equal:

                         (((Z minus 0.800) divided by 0.200) multiplied by (2001
                         Earn-out  Points  Pool  minus  2001  Contract  Earn-out
                         Points));

                         and (b) any remaining  Earn-out  Points,  including any
                         2000  Carry-over  Earn-out  Points,   shall  be  deemed
                         unearned and shall be forfeited.

<PAGE>


                    o if Z is greater  than  1.000,  then (a) the number of 2001
                      Revenue Earn-out Points shall equal:

                        ((2001  Earn-out  Points  Pool  minus the 2001  Contract
                        Earn-out   Points)  plus  (X   multiplied  by  the  2000
                        Carry-over Earn-out Points));

                        and (b) any remaining  Earn-out ) Points,  including any
                        unearned 2000 Carry-over  Earn-out Points,  after giving
                        effect to the distribution in the immediately  preceding
                        subsection  (a),  shall be deemed  unearned and shall be
                        forfeited.

                9.  DISPUTE  RESOLUTION.  All  disputes  with  respect  to  this
         Schedule  1.3 which  cannot be  resolved  by  mutual  agreement  of the
         parties thereto (each a "Disputed Matter"), shall be resolved solely in
         accordance with the provisions of Annex B to this Schedule.

                10.  OTHER.  Attached  at  Annex  D  is a  set  of  examples  of
         calculations  of Earn-out  Points,  the purpose of which is to serve as
         guidance in calculating Earn-out Points.



<PAGE>



                             ANNEX A TO SCHEDULE 1.3

                              REVENUE AND EXPENSES

Revenue

o    Inter-company  revenues  (to or from (a) North,  South and Central  America
     operations,  as  reported  on  FICS  Financial  Statements  (together,  the
     "Americas"),  to or from (b) Europe, Middle East and Africa operations,  as
     reported on FICS Financial Statements (together, "EMEA"), and Asian Pacific
     operations,  as reported on FICS Financial  Statements ("APAC")) will count
     only to the extent that the Americas or EMEA has  recognized  revenues from
     external parties.

Expenses

o    On an  annual  basis,  the  board  of  directors  of S1 shall  establish  a
     reasonable  budget  for each of the  geographical  theaters  (which are the
     Americas,  EMEA and APAC) which will establish operating  parameters (which
     shall be in the ordinary  course and  consistent  with past  practice)  for
     gross margins on licenses and professional  services (except FRS which will
     have its own budget), data center operations and FRS licenses and services.
     In addition, the board shall establish for each theatre, as a percentage of
     revenue,   expense   targets   for  sales  and   marketing,   general   and
     administrative expenses (expenses of management controlled by the theatres)
     and depreciation and amortization  expenses,  excluding goodwill.  All such
     budgets and targets will be reasonable and  consistent  with S1's worldwide
     operations.

o    Any general overhead  allocations from headquarters will not be included in
     the expense  parameters  noted  above.  However,  direct  costs paid by any
     non-EMEA  or APAC  entity on behalf  of the EMEA or APAC  theatres  will be
     charged to EMEA or APAC as a direct cost.

o    Any  expense  or  loss  actually  accrued  on  the  consolidated  financial
     statements by S1 following Closing related to any of the following shall be
     treated as an expense for purposes hereof:

                              (a) a breach  of any  representation  or  warranty
         made by FICS contained in this Agreement  (provided that, any potential
         expense related to a breach of any  representation  or warranty that is
         the  subject of a claim may be accrued  outside  such period upon final
         resolution thereof);

                              (b)  any  liability  relating  to  payment  of any
employer  or  employee  (ordinary  or  extraordinary)   social  security  taxes,
withholding  taxes, or other levies,  taxes or charges,  of whatever nature,  on
payments, of

<PAGE>


         whatever  nature,  made or which  should  have been made by FICS or any
         FICS  Subsidiary  to its  employees  or  independent  contractors  with
         respect to the period prior to Closing;

                              (c)  any  liability  relating  to  payment  of any
         remuneration,  vacation pay or any fringe  benefits of whatever  nature
         (other  than  stock  options)  on  the  basis  of  any  laws,  decrees,
         ordinances,  regulations,  collective  labor  agreements  or any  other
         rules, to any employee or independent  contractor  employed or hired by
         FICS or any FICS Subsidiary on or prior to the Closing;

                              (d) any liability relating to payment of any group
         insurance  contributions,  any related  taxes,  or any  related  social
         security contributions on the basis of any laws, decrees, ordinances or
         regulations  applicable  to FICS or any  FICS  Subsidiary  prior to the
         Closing; or

                              (e) any liability  relating to the sale by FICS or
         any FICS Subsidiary of the ABACUS engine outside of Belgium.

         ;provided  that,   no  such  expense  or loss shall be so treated as an
         expense or loss if, and to the extent,  that it is already reflected as
         an expense or reduction in revenue on the FICS Financial Statements.


<PAGE>


                                     ANNEX B

                               DISPUTE RESOLUTION


1.    Internal Mediation. First the Disputed Matter shall be referred jointly to
such senior  executives as may be mutually  agreed upon by the parties from time
to time.  If such  persons  do not agree  upon a  decision  within 10 days after
referral of the matter to them,  the parties  shall proceed to the next stage of
the dispute resolution procedure.

2.    Outside Mediation. S1  and  the  other  party may, upon written notice and
within 10 days  after the conclusion of internal mediation,  elect to utilize  a
non-binding  resolution  procedure  whereby each  presents its case at a hearing
(the "Hearing")  before a panel  consisting of a senior executive of each of the
parties and a mutually  acceptable neutral adviser. If a party elects to utilize
outside mediation the other party agrees to participate.  The Hearing will occur
no more  than  10  days  after a party  serves  written  notice  to use  outside
mediation.  Each party may be  represented  at the  Hearing by  lawyers.  If the
matter cannot be resolved at such Hearing by the senior executives,  the neutral
adviser may be asked to assist the senior executives in evaluating the strengths
and  weaknesses of each party's  position on the merits of the Disputed  Matter.
Thereafter,  the  senior  executives  shall  meet and try again to  resolve  the
matter.  If the matter  cannot be resolved at such  meeting,  the parties'  only
recourse is binding  arbitration  as provided  for in this Annex and the outside
mediation  proceedings will have been without prejudice to the legal position of
either party. No arbitration  may commence  concerning the Disputed Matter until
15 days have elapsed from the first day of the Hearing.  The parties  shall each
bear their respective  costs incurred in connection with this procedure,  except
that they shall share  equally the fees and expenses of the neutral  adviser and
the costs of the facility for the Hearing.

3.    Arbitration. If the Disputed Matter is not submitted to outside  mediation
and cannot be resolved within 10 days of referral to  inside  mediation,  or, if
submitted,  cannot be resolved within 15 days of the Hearing,  then either party
may  within 10 days after the  completion  of inside or  outside  mediation,  as
appropriate,  upon written notice,  submit the Disputed Matter to formal binding
arbitration in accordance with the arbitration provisions below.

4.    No Actions. Neither party will institute any action or proceeding  against
the other party in any court concerning any Disputed Matter other than  to  seek
entry of a judgment upon an award rendered by the arbitrators pursuant  to  this
dispute resolution process or to seek temporary or preliminary equitable relief.

<PAGE>


5.    Arbitration Provisions.

      (A) The Disputed  Matter shall be settled by final and binding arbitration
in accordance with the Commercial  Arbitration Rules of the American Arbitration
Association (the "AAA");  provided, however, that if such Rules are inconsistent
with any provision of this Agreement, this Agreement shall control;

      (B) Any such arbitration  shall be  conducted  in the Atlanta metropolitan
area at a place and time  mutually agreed upon by the parties or, failing mutual
agreement, selected by the arbitrators;

      (C) Any arbitration shall be conducted before a panel of 3 arbitrators who
shall be compensated for their services at a rate to be determined by the AAA in
the event the parties are not able to agree upon their rate of compensation, but
based  upon  hourly  or  daily  consulting  rates  for  the  neutral  arbitrator
reasonably  consistent with such arbitrator's  normal charges or fees. Within 15
days of notice by a party seeking  arbitration  under this provision,  the party
requesting   arbitration  shall  appoint  one  arbitrator  and  within  15  days
thereafter the other party shall appoint the second  arbitrator.  The persons so
appointed  shall  meet the  qualification  requirement  described  in (D) below.
Within  15  days  after  the  appointment  of the  second  arbitrator,  the  two
arbitrators  so chosen  shall  mutually  agree upon the  selection of the third,
impartial and neutral  arbitrator.  In the event the chosen  arbitrators  cannot
agree  upon  the  selection  of the  third  arbitrator,  the AAA  Rules  for the
selection of such an arbitrator  shall be followed,  provided that the selection
is from among such persons who meet the above-stated requirements;

      (D) In any  dispute  in which the  amount  of  controversy,  exclusive  of
interest and costs,  is less than  $25,000,  there shall be only one  arbitrator
agreed to by the parties who shall meet the requirements described above for the
neutral arbitrator; in all other cases, there shall be three arbitrators.

      (E) Each  party  shall  bear its own costs  and  expenses  of  arbitration
including,  but not limited to, filing fees and attorneys'  fees, and each party
hereby agrees to pay one-half of the  administrative  fees of the AAA and of the
compensation to be paid to the arbitrators in any such  arbitration and one-half
of the costs of transcripts and other expenses of the  arbitration  proceedings,
subject,  however,  to  allocation of costs and expenses  (excluding  attorneys'
fees) by the arbitrators consistent with the award.

      (F)  The  parties  agree  to  make  available  to  the  arbitrator(s)  all
non-privileged  books,  records,  schedules  and  other  information  reasonably
requested by them. Such materials are to be made available to the  arbitrator(s)
at such times as are deemed  necessary by them to make their  decision as herein
provided;

<PAGE>


      (G) The arbitrator(s) may conduct any pre-trial  proceedings by telephonic
conference call rather than by a face-to-face meeting;

      (H) The  arbitrator(s)  shall,  prior to rendering  their  decision on the
arbitration matter,  afford each of the parties an opportunity,  both orally and
in  writing,  to present any  relevant  evidence  (the formal  rules of evidence
applicable  to  judicial  proceedings  shall not apply) and to  express,  orally
and/or in writing  that  party's  point of view and  arguments  as to the proper
determination of the arbitration matter;  provided,  however,  that either party
submitting  written material shall be required to deliver a copy of such written
material  to the other  party  concurrently  with the  delivery  thereof  to the
arbitrator(s)  and such  other  party  shall  have the  opportunity  to submit a
written  reply,  a copy of which  shall  also be  delivered  to the other  party
concurrently with the delivery thereof to the arbitrator(s). Oral argument shall
take place only at a hearing before the  arbitrator(s)  at which all parties are
afforded a reasonable opportunity to be present and be heard;

      (I) In the  event of a willful  default  by any of the  parties  hereto in
appearing  before the  arbitrator(s)  after due written  notice  shall have been
given,  the  arbitrator(s)  are hereby  authorized to render a decision upon the
testimony of the party(ies) appearing before the arbitrator(s);

      (J) The arbitrator(s) shall (by decision of a majority of the arbitrators)
make a  decision  and award  resolving  the  dispute  within  45 days  after the
selection of the last arbitrator, or the first arbitrator if only one arbitrator
is to decide the dispute; and within 15 days of the last hearing held concerning
such dispute(s);

      (K) Any  judgment  upon the award  rendered  by the  arbitrator(s)  may be
entered in any court having jurisdiction thereof;

      (L) Within 30 days after the  arbitrators  make their  decision and award,
the  arbitrators  shall  render  findings of fact and  conclusions  of law and a
written  opinion  setting forth the basis and reasons for any decision and award
rendered  by them and deliver  such  documents  to each party to this  Agreement
along with a signed copy of the award;

      (M) The arbitrator(s)  shall have the authority to grant any equitable and
legal remedies that would be available in any judicial proceeding  instituted to
resolve a disputed matter, including the award of interim or preliminary relief;
and

      (N) The arbitrator(s) chosen in accordance with these provisions shall not
have  the  power  to  alter,  amend  or  otherwise  affect  the  terms  of these
arbitration provisions or the Agreement.



<PAGE>


                                     ANNEX C

                                 LARGE CUSTOMERS



         1.  Current  list of top 200 largest  banks  worldwide by asset size as
             reported by Institutional Investor (or if such publication does not
             then  publish  such  a  list,  another  internationally  recognized
             directory  of similar  acceptance),  as updated  from time to time;
             provided however,  that for purposes hereof any such bank must have
             at least $25,000,000,000 in assets; and

         2.  Current  list of top 100  world  financial  institutions  by market
             capitalization   as  reported  by  American   Banker  (or  if  such
             publication   does  not   then   publish   such  a  list,   another
             internationally recognized directory of similar acceptance).

         Notwithstanding  the foregoing,  a Large Customer shall not include (i)
any entity  ("Entity")  with which S1, in each case at the time of entering into
the  related  contract,  has any  contractual  relationship,  (ii) any parent or
subsidiary  of such  Entity,  or (iii) any entity  under the direct or  indirect
common control of such Entity.

<PAGE>
                                     ANNEX D

                               EARN-OUT EXAMPLES1
<TABLE>
<CAPTION>

- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
FICS 2000        2000          2000         EXCESS        Y       2000         2000            2000          FICS 2001
EXPENSES         LARGE         CONTRACT     2000                  REVENUE      CARRY-OVER      EARN-OUT      EXPENSES
LESS THAN 110%   CUSTOMER      EARN-OUT     LARGE                 EARN-OUT     EARN-OUT        POINTS        LESS THAN 110%
AND GROSS        CONTRACTS     POINTS       CUSTOMER              POINTS       POINTS          FORFEITED     AND GROSS
                                            CONTRACTS                                                        MARGIN
                                                                                                             TEST MET
<S>              <C>           <C>          <C>           <C>     <C>          <C>             <C>           <C>

- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              3            675,000       0          0.91    1,051,875         860,625             0       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              7          1,125,000       2          0.87      590,625       1,096,875             0       N
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              1            225,000       0           1.0    2,137,500               0             0       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              4            900,000       0          0.89      810,000         990,000             0       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              6          1,125,000       1          0.77            0         843,750       843,750       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       N              5          1,125,000       0            --            0               0     1,687,500       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              10         1,125,000       5           1.0    1,687,500               0             0       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       Y              0                  0       0          0.99    2,137,500         112,500             0       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       N              2            450,000       0            --            0               0     2,025,000       N
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------
       N              3            675,000       0          0.75            0         956,250       956,250       Y
- ---------------- ------------- ------------ ------------- ------- ------------ --------------- ------------- -------------


- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
2001 LARGE       2001 LARGE     2001          Z        X        2001         2000         2000         2001
CUSTOMER         CONTRACT       EARN-OUT                        REVENUE      CARRY-       CARRY-       EARN-OUT
CONTRACTS        EARN-OUT       POINT                           EARN-OUT     OVER         OVER         POINTS
(INCLUDING       POINTS         VALUE                           POINTS       EARN-OUT     EARN-OUT     FORFEITED
EXCESS 2000                                                                  POINTS       POINTS
LARGE CUSTOMER                                                               EARNED       FORFEITED
CONTRACTS)
<C>              <C>            <C>           <C>      <C>      <C>          <C>          <C>          <C>
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       5            787,500       157,500        0.89        0      506,250            0      860,625       618,750
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       2            450,000       225,000          --       --            0            0    1,096,875     1,237,500
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       3            675,000       225,000        0.96        0    1,170,000            0            0       292,500
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       5            675,000       135,000        >1.0      0.4    1,125,000      396,000      594,000             0
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       3            562,000       187,000        >1.0     0.06    1,125,000       50,625      793,125             0
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       2            450,000       225,000        0.82        0      123,750            0            0     1,113,750
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       5            562,500       112,500        >1.0      1.0    1,125,000            0            0             0
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       1            225,000       225,000        >1.0      0.8    2,025,000       90,000       22,500             0
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       3            225,000       225,000          --       --            0            0            0     1,350,000
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------
       4            787,500       196,875        0.79        0            0            0      956,250     1,125,000
- ---------------- -------------- ------------- -------- -------- ------------ ------------ ------------ -------------

</TABLE>
- -------------------
1  Revenue targets for Fiscal Year 2000 and Fiscal Year 2001 are $89 million and
$123 million respectively,  as adjusted for the FICS Fourth Quarter 1999 Revenue
Adjustment  and the  sale or  discontinuation  of the FICS  Financial  Reporting
System Division, if applicable.




                                                                    EXHIBIT 10.1

                           STOCK PURCHASE AGREEMENT II

                                  BY AND AMONG

                    SECURITY FIRST TECHNOLOGIES CORPORATION,


                          THE INDIVIDUALS AND ENTITIES
                           WHO ARE SIGNATORIES HERETO

                                       AND

                                 FICS GROUP N.V.






                         DATED AS OF SEPTEMBER 21, 1999


<PAGE>

                                TABLE OF CONTENTS

<TABLE>
                                                                                                 Page
                                                                                                 ----

<S>            <C>                                                                                  <C>
SECTION 1.        PURCHASE AND SALE OF THE SHARES....................................................1
      1.1      Sale and Issuance of the Initial Shares...............................................1
      1.2      Stock Purchase........................................................................2
      1.3      First Closing.........................................................................2
      1.4      Second Closing........................................................................3
      1.5      Third Closing.........................................................................3
SECTION 2.        STOCK OPTIONS......................................................................3
      2.1      Successor Options.....................................................................3
      2.2      Additional Options....................................................................4
SECTION 3.        REPRESENTATIONS AND WARRANTIES OF S1...............................................4
      3.1      Corporate Organization................................................................4
      3.2      Capitalization........................................................................5
      3.3      Authority; No Violation...............................................................6
      3.4      Consents and Approvals................................................................7
      3.5      Financial Statements; Exchange Act Filings; Books and Records.........................7
      3.6      Broker's Fees.........................................................................8
      3.7      Absence of Certain Changes or Events..................................................8
      3.8      Legal Proceedings.....................................................................8
      3.9      Taxes and Tax Returns.................................................................9
      3.10     Employee Plans........................................................................10
      3.11     Certain Contracts.....................................................................12
      3.12     Environmental Matters.................................................................13
      3.13     Properties and Assets.................................................................14
      3.14     Insurance.............................................................................15
      3.15     Compliance with Applicable Laws.......................................................15
      3.16     S1 Information........................................................................15
      3.17     Intellectual Property.................................................................15
SECTION 4.        REPRESENTATIONS AND WARRANTIES OF PURCHASERS.......................................18
      4.1      Organization of Purchasers............................................................18
      4.2      Authorization of Transaction..........................................................18
      4.3      Non-Contravention.....................................................................19
      4.4      Broker's Fees.........................................................................20
      4.5      Adequate Resources....................................................................20
      4.6      No Legal, Tax or Investment Advice....................................................20
      4.7      Status of Purchasers..................................................................20

                                                       -i-
</TABLE>

<PAGE>
<TABLE>
<S>            <C>                                                                                  <C>
SECTION 5.        ADDITIONAL AGREEMENTS..............................................................20
      5.1      Lock-up Covenant......................................................................20
      5.2      S1 Board of Directors.................................................................21
      5.3      Compliance with Antitrust Laws........................................................21
      5.4      Regulatory Matters....................................................................22
      5.5      Stockholder Meeting...................................................................23
      5.6      Legal Conditions......................................................................24
      5.7      Stock Exchange Listing................................................................24
      5.8      Registration of S1 Common Stock.......................................................24
      5.9      Resale of Akkermans'S1 Common Stock...................................................25
      5.10     Registration Proceedings..............................................................25
      5.11     Conduct of S1's Business..............................................................29
      5.12     Advice of Changes.....................................................................29
      5.13     Joinder of Additional Purchasers......................................................30
SECTION 6.        CONDITIONS TO FIRST CLOSING........................................................30
      6.1      Conditions to Obligations of All Parties..............................................30
      6.2      Conditions to the Obligations of Purchasers...........................................30
      6.3      Conditions to Obligations of S1.......................................................31
SECTION 7.        CLOSINGS...........................................................................32
      7.1      Deliveries by S1......................................................................32
      7.2      Deliveries by Purchasers..............................................................33
SECTION 8.        LEGEND.............................................................................34
      8.1      Endorsement...........................................................................34
      8.2      Removal of Legend.....................................................................35
SECTION 9.        TERMINATION........................................................................36
      9.1      Mutual Consent........................................................................36
      9.2      Other Termination.....................................................................36
      9.3      Effect of Termination.................................................................37
SECTION 10.       MISCELLANEOUS......................................................................37
      10.1     Additional Actions and Documents......................................................37
      10.2     Expenses..............................................................................37
      10.3     Notices...............................................................................37
      10.4     Waiver.39
      10.5     Binding Effect........................................................................39
      10.6     Entire Agreement; Amendment...........................................................39
      10.7     Severability..........................................................................39
      10.8     Headings..............................................................................39
      10.9     Governing Law.........................................................................40
      10.10    Signature in Counterparts.............................................................40
      10.11    No Third Party Beneficiaries..........................................................40
      10.12    Assignability.........................................................................40
      10.13    Parties Not Partners..................................................................41

                                                     -ii-
</TABLE>

<PAGE>

<TABLE>
<S>            <C>                                                                                  <C>
      10.14    Non-Survival of Representations and Warranties........................................41
      10.15    Certain Definitions...................................................................41

                                                      -iii-
</TABLE>



<PAGE>
                           STOCK PURCHASE AGREEMENT II

                  This Stock Purchase Agreement II (this "Agreement"),  dated as
of the 21st day of September,  1999, is entered into by and among Security First
Technologies  Corporation,  a Delaware  corporation  ("S1"), the individuals and
entities who are signatories  hereto,  and as may be joined by other individuals
and  entities  from  time  to  time,  (each,  a  "Purchaser"  and  collectively,
"Purchasers")  and FICS Group  N.V.,  a Belgian  corporation  ("FICS")  (for the
limited purposes set forth in Section 5 and Section 6.3(b) hereof).

                  WHEREAS,   the  parties  hereto  and  other   individuals  had
previously entered into that certain Stock Purchase  Agreement,  dated as of May
16, 1999, by and among S1, the individuals identified on Schedule 1 thereto (the
"Former  Purchasers"),  and FICS for the limited  purposes  stated  therein (the
"Former Agreement");

                  WHEREAS,  pursuant to Section 9.1 of the Former  Agreement the
parties  thereto  have  terminated  the Former  Agreement  as  confirmed by that
certain letter agreement from S1 to the Former  Purchasers and FICS, dated as of
even date herewith;

                  WHEREAS,  the Board of Directors of S1 and each Purchaser have
determined that it is in their best interests, or in the best interests of their
respective  companies  and  stockholders,  as the case may be, to  complete  the
transaction  described in this Agreement  whereby S1 will sell and issue to each
Purchaser, and each Purchaser will subscribe for and acquire, a number of shares
of S1's common stock, par value $0.01 per share ("S1 Common Stock") and a number
of options to purchase shares of S1 Common Stock, as described below.

                  NOW,  THEREFORE,  in  consideration  of the  mutual  promises,
representations,   warranties,  covenants  and  conditions  set  forth  in  this
Agreement, the sufficiency of which is hereby acknowledged, the parties mutually
agree as follows:


SECTION 1.          PURCHASE AND SALE OF THE SHARES.
                    --------------------------------

         1.1      SALE AND ISSUANCE OF THE INITIAL SHARES.
                  ----------------------------------------

                  1.1(a) At the First Closing (as defined at Section 1.3 hereof)
and subject to the terms and conditions of this Agreement, each Purchaser hereby
subscribes  for,  and agrees to purchase  the  "Initial  Shares"  for  aggregate
consideration  (the "Initial Share  Consideration")  equal to the product of (i)
$35.75

<PAGE>

multiplied by (ii) the number of Initial Shares (after  adjustment for any stock
splits,  combinations or dividends or distributions in such common stock between
the date of this Agreement and the date immediately prior to the First Closing).
As to each Purchaser,  "Initial Shares" shall mean 10,000,000  multiplied by the
percentage (the "Purchaser  Ratio") set forth across from each  Purchaser's name
on  Schedule  1 hereto.  S1 agrees to sell and issue the  Initial  Shares to the
Purchasers at the First Closing for the Initial Share  Consideration  subject to
the terms of this Agreement.

                  1.1(b).  The Initial Share  Consideration  shall be payable in
cash, a bill of exchange  issued by S1 Holdings or in any other form  reasonably
acceptable to S1.

1.2      STOCK PURCHASE.
         ---------------

                  1.2(a) Upon the Second Closing,  the Purchasers shall purchase
from S1 and S1  agrees  to sell to the  Purchasers  that  number of shares of S1
Common Stock equal to (i) the "2000  Earn-out  Payment" (as such term is defined
in that certain Share Purchase Agreement II, dated of even date herewith, by and
among S1 Europe  Holdings  N.V., a Belgian  corporation  (naamloze  vennootschap
("N.V.")) and a subsidiary of S1, the Purchasers,  and for the limited  purposes
stated therein,  S1 and FICS (the "Holdings  Purchase  Agreement")),  divided by
(ii) $35.75 (the "2000 Shares").

                  1.2(b) Upon the Third Closing,  the Purchasers  shall purchase
from S1 and S1  agrees  to sell to the  Purchasers  that  number of shares of S1
Common Stock equal to (i) the "2001  Earn-out  Payment" (as such term is defined
in the Holdings Purchase Agreement), divided by (ii) $35.75 (the "2001 Shares").

                  1.2(c) In the event S1 should  split or combine  the S1 Common
Stock,  or pay any dividend or other  distribution on all of its common stock in
such common  stock,  then the dollar  amount set forth in clause (ii) in each of
paragraphs 1.2(a) and (b) above shall be appropriately  adjusted to reflect such
split, combination, dividend or distribution.

1.3      FIRST CLOSING.
         --------------

                  1.3(a).  The First Closing shall take place  concurrently with
the closing of the "Transaction," as defined in the Holdings Purchase Agreement.

                  1.3(b).  On the date of the First Closing (the "First  Closing
Date"), the First Closing shall take place at 10:00 a.m., Washington, D.C. time,
at the offices of Hogan & Hartson  L.L.P.,  555 13th Street,  N.W.,  Washington,
D.C. 20004, or at such other time and place as the parties shall mutually agree.

                                       -2-
<PAGE>

1.4      SECOND CLOSING.
         ---------------

                  1.4(a).  The Second Closing shall take place concurrently with
the "Second Payment Date" as defined in the Holdings Purchase Agreement.

                  1.4(b). On the date of the Second Closing (the "Second Closing
Date"),  the Second  Closing  shall take place at 10:00 a.m.,  Washington,  D.C.
time,  at the  offices  of  Hogan &  Hartson  L.L.P.,  555  13th  Street,  N.W.,
Washington,  D.C.  20004,  or at such other time and place as the parties  shall
mutually agree.

1.5      THIRD CLOSING.
         --------------

                  1.5(a).  The Third Closing shall take place  concurrently with
the "Third Payment Date" as defined in the Holdings Purchase Agreement.

                  1.5(b).  On the date of the Third Closing (the "Third  Closing
Date"), the Third Closing shall take place at 10:00 a.m., Washington, D.C. time,
at the offices of Hogan & Hartson  L.L.P.,  555 13th Street,  N.W.,  Washington,
D.C. 20004, or at such other time and place as the parties shall mutually agree.

SECTION 2.        STOCK OPTIONS.
                  --------------

         2.1      SUCCESSOR OPTIONS.
                  ------------------

                  Upon the First  Closing,  S1 shall offer in exchange  for each
option (a "FICS Option") which is outstanding and unexercised  immediately prior
thereto,  and granted by FICS under the 1998 Stock Plan of FICS Group  Holdings,
Inc., a Delaware  corporation  ("FICS  Holdings")  (the "FICS Stock  Plan"),  or
otherwise,  an option to purchase  shares of S1 Common Stock (each, a "Successor
Option") in an amount and at an exercise price determined as provided below:

                    (1)    The number of Successor  Options to be granted  shall
                           be equal to (a) 98.905896 (the  "Conversion  Number")
                           multiplied  by (b)  the  number  of  shares  of  FICS
                           Holdings subject to FICS Options;  provided that such
                           Conversion  Number  shall be  adjusted  for any stock
                           splits, combinations or dividends or distributions of
                           the S1 Common  Stock  between the date hereof and the
                           First Closing; and

                     (2)   The exercise price for each of the Successor  Options
                           shall be equal to the  exercise  price  per  share of
                           FICS  Subsidiary  Stock under the option  immediately
                           before the First  Closing  divided by the  Conversion
                           Number,  provided that such  exercise  price shall be
                           rounded down to the nearest cent.

                                      -3-
<PAGE>

The  parties  hereto  understand  that the  number of shares of S1 Common  Stock
subject  to  Successor   Options  and  the  price   thereof  shall  be  adjusted
appropriately  for any stock splits,  combinations or dividends or distributions
in the FICS capital stock,  as of the date hereof.  The duration and other terms
of the Successor  Options  immediately after the First Closing shall be the same
as the corresponding  terms of the FICS Options in effect immediately before the
First  Closing,  except that all  references to FICS in the FICS Stock Plan (and
the  corresponding  references  in the option  agreement  documenting  such FICS
Option) shall be deemed to be references to S1.

         2.2      ADDITIONAL OPTIONS.
                  -------------------

                  Upon the First Closing, or as soon as possible thereafter,  S1
shall grant a number of options to purchase  shares of S1 Common Stock (each, an
"Additional  Option") to such  individuals  as  designated  by Michel  Akkermans
("Akkermans") in consultation with S1. The aggregate number of such grants shall
not exceed (a) 4,000,000 (after adjustment for any stock splits, combinations or
dividends  or  distributions  in the S1 Common  Stock  between  the date of this
Agreement and the First Closing) minus (b) the number of Successor Options to be
granted  pursuant to Section 2.1 hereof.  Each  Additional  Option shall have an
exercise  price not less than the stock  price,  as quoted on the  Nasdaq  Stock
Market or such  other  national  exchange  on which the S1 Common  Stock is then
traded,  of a share of S1  Common  Stock at the  close of  business  on the last
business day prior to the date of such grant.

SECTION 3.        REPRESENTATIONS AND WARRANTIES OF S1.
                  -------------------------------------

                  S1 hereby makes the following  representations  and warranties
to each  Purchaser as set forth in this Section 3, each of which is being relied
upon by each  Purchaser as a material  inducement to enter into and perform this
Agreement.  All of the disclosure  schedules of S1 referenced  below and thereby
required of S1 pursuant to this Agreement,  which disclosure  schedules shall be
cross-referenced  to the specific sections and subsections of this Agreement and
delivered herewith, are referred to herein as the "S1 Disclosure Schedule."

         3.1      CORPORATE ORGANIZATION.
                  -----------------------

                  (a) S1 is a corporation  duly organized,  validly existing and
in good standing  under the laws of the State of Delaware.  S1 has the corporate
power and  authority  to own or lease all of its  properties  and  assets and to
carry on its  business  as it is now being  conducted,  and is duly  licensed or
qualified  to do  business  in each  jurisdiction  in which  the  nature  of the
business  conducted  by it or the  character or location of the  properties  and
assets owned or leased by it makes such  licensing or  qualification  necessary.
The Amended and Restated Certificate of Incorporation and

                                      -4-
<PAGE>

Amended and Restated  Bylaws of S1,  copies of which have  previously  been made
available  to the  Purchasers,  are true,  correct and  complete  copies of such
documents as in effect as of the date of this Agreement.

                  (b) Each  Subsidiary of S1 (each, a "S1  Subsidiary")  and the
jurisdiction  of its  organization  is set  forth at  Section  3.1(b)  of the S1
Disclosure Schedule.  Except as set forth at Section 3.1(b) of the S1 Disclosure
Schedule,  each S1 Subsidiary is a corporation duly organized,  validly existing
and in good standing  under the laws of the  jurisdiction  of its  organization.
Each S1 Subsidiary has the corporate  power and authority to own or lease all of
its  properties  and  assets  and to carry on its  business  as it is now  being
conducted, and is duly licensed or qualified to do business in each jurisdiction
in which the nature of any material business conducted by it or the character or
location of any material  properties  or assets owned or leased by it makes such
licensing or qualification necessary. The charter and other corporate governance
documents of each S1 Subsidiary,  copies of which have previously been delivered
to the Purchasers, are true, correct and complete copies of such documents as in
effect as of the date of this Agreement.

         3.2      CAPITALIZATION.

                  (a)  The  authorized  capital  stock  of S1  consists  of  (i)
350,000,000  shares S1 Common Stock, of which 27,674,239 shares were outstanding
at August 31, 1999 and (ii) 25,000,000  shares of serial  preferred  stock,  par
value  $.01 per share ("S1  Preferred  Stock"),  1,637,832  shares of which were
designated  as "Series A  Convertible  Preferred  Stock,"  749,064 of which were
designated  as "Series B  Redeemable  Convertible  Preferred  Stock" and 215,000
shares of which were  designated as "Series C Redeemable  Convertible  Preferred
Stock." At August 30, 1999,  391,450  shares of Series A  Convertible  Preferred
Stock,  749,064 shares of Series B Redeemable  Convertible  Preferred  Stock and
215,000  shares  of  Series  C  Redeemable   Convertible  Preferred  Stock  were
outstanding.  At such date,  there  were  13,953,024  shares of S1 Common  Stock
reserved for issuance  pursuant to employee  stock  options (of which options to
purchase  8,960,912  shares are  currently  outstanding).  All of the issued and
outstanding  shares of S1 Common  Stock have been duly  authorized  and  validly
issued and are fully paid,  nonassessable and free of preemptive rights, with no
personal  liability  attaching to the  ownership  thereof,  and upon issuance in
accordance with the terms hereof, the Initial Shares will be duly authorized and
validly issued, and fully paid,  nonassessable and free of preemptive rights. As
of the date of this  Agreement,  except as set forth above, S1 does not have and
is not  bound  by  any  outstanding  subscriptions,  options,  warrants,  calls,
commitments or agreements of any character  calling for the purchase or issuance
of any  shares  of S1 Common  Stock or S1  Preferred  Stock or any other  equity
securities of S1 or any securities presenting the right to purchase or otherwise
receive any shares of S1 Common Stock or S1 Preferred  Stock,  other than as set
forth at Section 3.2(a) of the S1 Disclosure Schedule.

                                      -5-
<PAGE>

                  (b) S1 owns,  directly  or  indirectly,  all of the issued and
outstanding  shares of capital  stock of each of the S1  Subsidiaries,  free and
clear of all liens, charges, encumbrances and security interests whatsoever, and
all of such shares are duly  authorized  and validly  issued and are fully paid,
nonassessable  and  free  of  preemptive  rights,  with  no  personal  liability
attaching to the  ownership  thereof.  No S1  Subsidiary  has or is bound by any
outstanding  subscriptions,  options, warrants, calls, commitments or agreements
of any  character  calling for the purchase or issuance of any shares of capital
stock  or any  other  equity  security  of  such  Subsidiary  or any  securities
representing  the right to purchase or  otherwise  receive any shares of capital
stock or any other equity security of such Subsidiary.

         3.3      AUTHORITY; NO VIOLATION.

                  (a) S1 has full  corporate  power and authority to execute and
deliver this Agreement and to consummate the transactions  contemplated  hereby.
The  execution  and  delivery  of this  Agreement  and the  consummation  of the
transactions  contemplated  hereby  have been duly and  validly  approved by the
Board  of  Directors  of S1.  Except  for the  approval  of the S1  Issuance  as
contemplated  by this Agreement by the requisite vote of S1's  stockholders,  no
other  corporate  proceedings  on the part of S1 (except for matters  related to
setting  the date,  time,  place and record date for the  special  meeting)  are
necessary  to  approve  this  Agreement  or  to  consummate   the   transactions
contemplated  hereby.  This  Agreement  has been duly and validly  executed  and
delivered by S1 and (assuming due authorization,  execution and delivery by FICS
and each of the Purchasers)  will  constitute a valid and binding  obligation of
S1, enforceable  against S1 in accordance with its terms,  except as enforcement
may be limited by general principles of equity whether applied in a court of law
or a court of equity and by  bankruptcy,  insolvency  and similar law  affecting
creditors' rights and remedies generally.

                  (b) Neither the  execution  and delivery of this  Agreement by
S1, nor the  consummation by S1 of the  transactions  contemplated  hereby,  nor
compliance by S1 with any of the terms or provisions hereof or thereof, will (i)
violate any provision of the Amended and Restated  Certificate of  Incorporation
or Amended and  Restated  Bylaws of S1, or (ii)  assuming  that the consents and
approvals referred to in Section 3.4 are duly obtained, (x) violate any Laws (as
defined  below)  applicable  to S1 or any of its  properties  or assets,  or (y)
violate,  conflict  with,  result in a breach of any provision of or the loss of
any benefit under, constitute a default (or an event which, with notice or lapse
of time, or both, would  constitute a default) under,  result in the termination
of or a right of termination or cancellation  under,  accelerate the performance
required by, or result in the creation of any lien,  pledge,  security interest,
charge or other  encumbrance upon any of the respective  properties or assets of
S1 under any of the terms, conditions or provisions of any note, bond, mortgage,
indenture,  deed of trust,  license,  lease,  agreement or other  instrument  or
obligation to

                                      -6-
<PAGE>

which  S1 is or will be,  as the case may be, a party,  or by which S1 or any of
its properties or assets may be bound or affected.

         3.4      CONSENTS AND APPROVALS.

                  No consents or approvals of or filings or  registrations  with
any court,  administrative agency or commission or other governmental  authority
or  instrumentality  (each a "Governmental  Entity") or with any third party are
necessary  in  connection  with (1) the  execution  and  delivery  by S1 of this
Agreement,  and (2) the  consummation  by S1 of the S1  Issuance  and the  other
transactions contemplated hereby, except for such consents, approvals or filings
the  failure  of which to obtain  will not have a  Material  Adverse  Effect (as
defined below) on the ability of S1 to consummate the transactions  contemplated
hereby.

         3.5      FINANCIAL STATEMENTS; EXCHANGE ACT FILINGS; BOOKS AND RECORDS.

         S1 has  previously  delivered to  representatives  of Purchasers  true,
correct and complete  copies of the  consolidated  balance  sheets of S1 and its
Subsidiaries  as of  December  31 for the  fiscal  years  1998  and 1997 and the
related  consolidated  statements of operations,  stockholders'  equity and cash
flows for the fiscal years 1996  through  1998,  inclusive,  as reported in S1's
Annual  Report on Form 10-K for the fiscal year ended  December 31, 1998,  filed
with the SEC  under  the  Securities  Exchange  Act of  1934,  as  amended  (the
"Exchange  Act"),  in each case  accompanied  by the  audit  report of KPMG LLP,
independent  public  accountants  with respect to S1, and the interim  financial
statements  of S1 as of and for the six months ended June 30, 1999 and 1998,  as
included in S1's  quarterly  report on Form 10-Q for the quarter  ended June 30,
1999,  as filed with the SEC, and the  financial  statements of S1 as of and for
the month ended July 31, 1999 and 1998. The financial  statements referred to in
this Section 3.5 (including the related notes,  where applicable) fairly present
(subject,  in the case of the unaudited  statements,  to normal  recurring audit
adjustments)  the  results  of  the  consolidated  operations  and  consolidated
financial condition of S1 and its Subsidiaries for the respective fiscal periods
or as of the  respective  dates  therein  set  forth;  each of  such  statements
(including  the  related  notes,   where  applicable)   comply  with  applicable
accounting  requirements and with the published rules and regulations of the SEC
with respect thereto; and each of such statements  (including the related notes,
where  applicable) has been prepared in accordance  with U.S. GAAP  consistently
applied  during the periods  involved,  except as indicated in the notes thereto
or, in the case of unaudited statements,  as permitted by Form 10-Q. S1's Annual
Report  on Form  10-K  for the  fiscal  year  ended  December  31,  1998 and all
subsequently  filed  reports under  Sections  13(a),  13(c),  14 or 15(d) of the
Exchange Act comply in all material  respects with the appropriate  requirements
for such reports under the Exchange Act, and S1 has previously delivered to FICS
true,  correct and complete copies of such reports.  The books and records of S1
and its  Subsidiaries

                                      -7-
<PAGE>

have been, and are being, maintained in all material respects in accordance with
U.S. GAAP and any other applicable legal and accounting requirements.

         3.6      BROKER'S FEES.

         Neither S1 nor any S1 Subsidiary nor any of their  respective  officers
or directors has employed any broker or finder or incurred any liability for any
broker's  fees,  commissions  or  finder's  fees in  connection  with any of the
transactions  contemplated  by this Agreement,  except that S1 has engaged,  and
will pay a fee or commission to BancBoston Robertson Stephens,  Inc. ("BBRS") in
accordance with the terms of a letter agreement between BBRS and S1, dated April
9,  1999,  a true,  complete  and  correct  copy of which has been  provided  to
Purchasers.

         3.7      ABSENCE OF CERTAIN CHANGES OR EVENTS.

                  (a) Except as disclosed in S1's Annual Report on Form 10-K for
the fiscal  year ended  December  31,  1998,  or any other  report  filed  under
Sections  13(a),  13(c),  14 or 15(d) of the  Exchange  Act,  true,  correct and
complete  copies of which have  previously  been  delivered or made available to
representatives  of Purchasers,  since December 31, 1998, (i) neither S1 nor any
S1 Subsidiary has incurred any material  liability,  except as  contemplated  by
this Agreement or in the ordinary  course of their  businesses  consistent  with
their past practices, and (ii) no event has occurred which has had, or is likely
to have, individually or in the aggregate, a Material Adverse Effect on S1.

                  (b) Since  December 31, 1998,  S1 and each S1  Subsidiary  has
carried on its respective businesses in the ordinary and usual course consistent
with past practices.

         3.8      LEGAL PROCEEDINGS.

                  (a) Neither S1 nor any of its  Subsidiaries is a party to any,
and  there  are  no  pending   or,  to  S1's   knowledge,   threatened,   legal,
administrative,   arbitration   or  other   proceedings,   claims,   actions  or
governmental or regulatory investigations of any nature against S1 or any of its
Subsidiaries or which challenge the validity of the transactions contemplated by
this Agreement as to which there is a reasonable probability of success.

                  (b) There is no injunction,  order, judgment or decree imposed
upon S1, any of its Subsidiaries or the assets of S1 or any of its Subsidiaries.

                                      -8-
<PAGE>

         3.9      TAXES AND TAX RETURNS.

         For  purposes  of this  Section  3.9,  S1  shall  include  S1,  each S1
Subsidiary and each other  affiliated or related  corporation or entity if S1 or
any S1 Subsidiary has or could have any material liability for the taxes of such
corporation or entity. S1 has duly filed all Tax Returns required to be filed by
it on or prior to the date hereof (all such returns being  accurate and complete
in all material  respects) and has duly paid or made  provision on the financial
statements  referred to in Section 3.5 hereof in  accordance  with United States
generally accepted  accounting  principles ("U.S.  GAAP") for the payment of all
material  Taxes which have been incurred or are due or claimed to be due from it
by Taxing  Authorities on or prior to the date hereof other than Taxes (a) which
(x) are not yet  delinquent  or (y) are being  contested  in good  faith and set
forth in Section 3.9 of the S1  Disclosure  Schedule and (b) which have not been
finally determined. The charges, accruals, and reserves with respect to Taxes on
the books of S1 are adequate (as  determined in accordance  with U.S.  GAAP) and
are at least equal to its  liability  for Taxes.  There  exists no proposed  tax
assessment  against S1 except as disclosed in the S1  financial  statements.  No
consent to the application of Section  341(f)(2) of the Code has been filed with
respect to any property or assets held,  acquired,  or to be acquired by S1. All
Taxes that S1 is or was required to withhold or collect have been duly  withheld
or  collected  and,  to the  extent  required,  have  been  paid  to the  proper
Governmental  Body. All liability with respect to the Tax Returns of S1 has been
satisfied for all years to and including 1998. No Taxing  Authority has notified
S1 of, or  otherwise  asserted,  that there are any material  deficiencies  with
respect  to the Tax  Returns of S1  subsequent  to 1994.  There are no  material
disputes pending,  or claims asserted for, Taxes or assessments upon S1, nor has
S1  been  requested  to give  any  currently  effective  waivers  extending  the
statutory period of limitation  applicable to any Tax Return for any period.  In
addition,  Tax Returns that are  accurate and complete in all material  respects
have been filed by S1 for all periods for which returns were due with respect to
income tax  withholding  with  respect to wages and other income and the amounts
shown  on such Tax  Returns  to be due and  payable  have  been  paid in full or
adequate provision therefor in accordance with U.S. GAAP has been included by S1
in the financial  statements referred to in Section 3.5. All S1 Tax Returns have
been examined by the relevant  Taxing  Authorities,  or closed  without audit by
applicable statutes of limitations, and all deficiencies proposed as a result of
such  examinations  have  been  paid or  settled,  for all  periods  before  and
including the taxable year ended  December 31, 1994. S1 has not consented to any
waiver or  extension of any statute of  limitations  with respect to any Tax. S1
has  provided or made  available  to S1 complete  and correct  copies of its Tax
Returns and all material correspondence and documents, if any, relating directly
or  indirectly  to taxes for each  taxable year or other  relevant  period as to
which the applicable  statute of limitations has not run on the date hereof. For
this  purpose,  "correspondence  and  documents"  include,  without  limitation,
amended Tax Returns, pending claims for refunds, notices from Taxing Authorities
of proposed  changes or  adjustments  to Taxes or Tax Returns

                                      -9-
<PAGE>

that have not been finally  resolved,  consents to  assessment  or collection of
Taxes,  acceptances of proposed  adjustments,  closing  agreements,  rulings and
determination   letters   and   requests   therefor,   and  all  other   written
communications  to or from  Taxing  Authorities  relating  to any  material  Tax
liability of S1.

                  (b)      For purposes of this Agreement:

                  "Tax" means any tax (including  any income tax,  capital gains
tax,  value-added tax, sales tax,  property tax, gift tax, or estate tax), levy,
assessment, tariff, duty (including any customs duty), deficiency, or other fee,
and any related charge or amount  (including  any fine,  penalty,  interest,  or
addition to tax), imposed,  assessed,  or collected by or under the authority of
any Taxing  Authority or payable  pursuant to any  tax-sharing  agreement or any
other  contract  relating  to the  sharing  or  payment  of any such tax,  levy,
assessment, tariff, duty, deficiency, or fee.

                  "Tax  Return"  means any  return  (including  any  information
return),  report,  statement,  schedule,  notice,  form,  or other  document  or
information  filed  with or  submitted  to,  or  required  to be  filed  with or
submitted  to,  any  Taxing  Authority  in  connection  with the  determination,
assessment,  collection,  or  payment  of any  Tax  or in  connection  with  the
administration,  implementation,  or enforcement of or compliance  with any law,
regulation or other legal requirement relating to any Tax.

                  "Taxing Authority" means any:

                           (a)  nation,  state,  county,  city,  town,  village,
district, or other jurisdiction of any nature;

                           (b) federal,  state,  local,  municipal,  foreign, or
other government;

                           (c) governmental or  quasi-governmental  authority of
any nature (including any governmental agency, branch, department,  official, or
entity and any court or other tribunal);

                           (d) multi-national organization or body; or

                           (e) body  exercising,  or entitled to  exercise,  any
administrative,  executive, judicial, legislative, police, regulatory, or taxing
authority or power of any nature.

         3.10     EMPLOYEE PLANS.

                  (a) For purposes of this Section  3.10,  S1 shall include each
of its Subsidiaries and any other entity that together with S1 would be deemed a
"single  employer"  within for purposes of ERISA  (determined  without regard to
whether such

                                      -10-
<PAGE>


entity  conducts  business  in  the  United  States).  Section  3.10  of  the S1
Disclosure  Schedule  sets forth a true and complete  list of each U.S. Plan and
each other plan,  arrangement or agreement  providing benefits to the current or
former  employees of S1 that S1 maintains  or  contributes  to as of the date of
this  Agreement,  or that  S1 has  within  the  last  six  years  maintained  or
contributed  to or  under  which  S1 has any  liability  (collectively,  the "S1
Plans").

                  (b) S1 has heretofore  delivered or made available to S1 true,
correct and  complete  copies of each of the S1 Plans and all related  documents
(other than S1 Plans established by a governmental  agency or authority to which
S1 is required to contribute under applicable law), including but not limited to
(i) the actuarial  report for such S1 Plan (if  applicable) for each of the last
five  years,  (ii)  the  most  recent  determination  letter  from  the  IRS (if
applicable) for each U.S. Plan,  (iii) the current summary plan  description and
any summaries of material  modification for each U.S. Plan and any corresponding
document  for each other S1 Plan,  (iv) all annual  reports  for each U.S.  Plan
filed for the  preceding  five plan  years  and any  annual or other  periodical
financial  information  concerning any other S1 Plan filed with any governmental
agency or authority or provided to employees or  beneficiaries  of such S1 Plan,
(v) all agreements  with  fiduciaries and service  providers  relating to the S1
Plan, (vi) all substantive correspondence relating to any such S1 Plan addressed
to or received from any governmental  agency or authority,  (vii) all personnel,
payroll,  and employment manuals and policies,  (viii) a written  description of
any S1 Plan that is not otherwise in writing.

                  (c) S1 has  performed  all of  its  obligations  under  all S1
Plans. S1 has made appropriate  entries in its financial  records and statements
for all obligations and liabilities under the S1 Plans that have accrued but are
not due. No statement,  either  written or oral, has been made by S1 with regard
to any S1 Plan that was not in  accordance  with the S1 Plan and that could have
an adverse economic  consequence to S1. S1 has no liability to the IRS, the U.S.
Pension  Benefit   Guaranty   Corporation  or  to  any  other   governmental  or
quasi-governmental  agency or authority  with respect to any S1 Plan. No S1 Plan
is subject to Title IV of ERISA.

                  (d) Except as set forth at Section  3.10 of the S1  Disclosure
Schedule,  (i) each of the S1 Plans has been  operated and  administered  in all
material  respects  in  compliance  with  applicable  Laws,  including,  but not
limited,  in the case of each U.S. Plan, to ERISA and the Code, (ii) each of the
U.S. Plans  intended to be "qualified"  within the meaning of Section 401 of the
Code is so  qualified  and S1 has  received  a  determination  letter or opinion
letter  from the IRS to such  effect,  which  letter  remains  in full force and
effect,  (iii)  with  respect to each U.S.  Plan that is subject to the  funding
requirements of ERISA and the Code, the present value of accrued  benefits under
such S1 Plan, based upon the actuarial  assumptions used for funding purposes in
the most recent actuarial report prepared by such S1 Plan's

                                      -11-
<PAGE>

actuary with respect to such S1 Plan, did not, as of its latest  valuation date,
exceed the then  current  value of the assets of such S1 Plan  allocable to such
accrued  benefits,  (iv)  no  S1  Plan  provides  benefits,  including,  without
limitation,  death or medical benefits (whether or not insured), with respect to
current or former employees of S1 beyond their  retirement or other  termination
of service,  other than (a)  coverage  mandated  by  applicable  Law,  (b) death
benefits  or   retirement   benefits   under  an  S1  Plan  that  also  provides
post-retirement  income,  annuity or pension  benefits  (including  an "employee
pension  plan" as that term is  defined  in ERISA),  (c)  deferred  compensation
benefits  under an S1 Plan that are accrued as  liabilities on the books of S1 ,
or (d)  benefits  the full  cost of which is  borne  by the  current  or  former
employee (or his  beneficiary),  (v) no  liability  under ERISA or any other law
relating  to employee  benefits or  employees  or their  beneficiaries  has been
incurred by S1 that has not been satisfied in full, and no condition exists that
presents a material risk of S1 incurring a material liability  thereunder,  (vi)
no U.S. Plan is a "multiemployer pension plan," as such term is defined in ERISA
and no  other  S1 Plan  is  maintained  pursuant  to any  collective  bargaining
agreement  or  other   agreement   with  a  labor  union  or  other   authorized
representative of labor,  (vii) all contributions or other amounts payable by S1
with respect to each S1 Plan and all other  liabilities of each such entity with
respect  to each S1 Plan,  in  respect  of current or prior plan years have been
paid or accrued in accordance with generally accepted accounting  practices and,
in the case of a U.S. Plan, ERISA and the Code, (viii) S1 and each S1 Subsidiary
have not engaged in a "prohibited  transaction"  as defined in ERISA or the Code
in connection  with which S1 could be subject to either any material  excise tax
or civil penalty  assessed  pursuant to ERISA or the Code, (ix) to the knowledge
of S1,  there are no  pending,  threatened  or  anticipated  claims  (other than
routine claims for benefits) by, on behalf of or against any of the plans or any
trusts  related  thereto,  (x) all S1 Plans could be  terminated as of the First
Closing without  material  liability in excess of the amount accrued therefor on
the  S1  financial   statements;   (xi)  no  S1  Plan,  either  individually  or
collectively,  provides for any payment by S1 that would not be  deductible  for
U.S. federal income tax purposes;  (xii) no "accumulated  funding deficiency" as
defined in ERISA or the Code,  whether or not waived,  and no "unfunded  current
liability"  as determined  under the Code exists with respect to any U.S.  Plan;
(xiii)  no U.S.  Plan has  experienced  a  "reportable  event"  (as such term is
defined  in  ERISA  and  regulations  thereunder)  that  is  not  subject  to an
administrative or statutory waiver from the reporting requirement.

         3.11     CERTAIN CONTRACTS.

                  (a)  Except  as  set  forth  at  Section  3.11(a)  of  the  S1
Disclosure  Schedule,  neither S1 nor any of its  Subsidiaries  is a party to or
bound  by any  contract,  arrangement  or  commitment  (i) with  respect  to the
employment of any directors,  officers,  employees or  consultants,  (ii) which,
upon the  consummation of the  transactions  contemplated by this Agreement will
(either alone or upon the occurrence of any additional acts or events) result in
any payment (whether of

                                      -12-
<PAGE>

severance  pay or  otherwise),  becoming  due  from S1 or any of its  respective
Subsidiaries  to  any  director,   officer  or  employee  thereof,  (iii)  which
materially  restricts  the  conduct of any line of  business by S1 or any of its
Subsidiaries,  (iv) with or to a labor union or guild  (including any collective
bargaining  agreement)  or (v) except as set forth on Section  3.11(a) of the S1
Disclosure  Schedule,  any of the  benefits of which will be  increased,  or the
vesting of the benefits of which will be accelerated by the occurrence of any of
the  transactions  contemplated  by this  Agreement,  or the value of any of the
benefits  of which will be  calculated  on the basis of any of the  transactions
contemplated  by this  Agreement  (including  as to this clause  (v),  any stock
option plan,  stock  appreciation  rights plan,  restricted  stock plan or stock
purchase  plan).  Except as set forth at Section  3.11(a)  of the S1  Disclosure
Schedule,  there  are  no  employment,   consulting  and  deferred  compensation
agreements to which S1 or any of its Subsidiaries is a party. Section 3.11(a) of
the S1  Disclosure  Schedule  sets forth a list of all  material  contracts  (as
defined in Item 601(b)(10) of Regulation S-K) of S1 and its  Subsidiaries.  Each
contract,  arrangement  or  commitment  of the type  described  in this  Section
3.11(a),  whether  or not set  forth in  Section  3.11(a)  of the S1  Disclosure
Schedule,  is referred to herein as a "S1  Contract,"  and neither S1 nor any of
its Subsidiaries  has received notice of, nor do any executive  officers of such
entities know of, any violation of any S1 Contract.

                  (b) (i) Each S1  Contract  is valid  and  binding  and in full
force  and  effect,  (ii) S1 and each of its  Subsidiaries  has in all  material
respects performed all obligations  required to be performed by it to date under
each S1 Contract,  and (iii) no event or condition exists which  constitutes or,
after notice or lapse of time or both, would  constitute,  a material default on
the part of S1 or any of its Subsidiaries under any such S1 Contract.

         3.12     ENVIRONMENTAL MATTERS.

                  (a) Each of S1 and the S1 Subsidiaries is in compliance in all
material respects with all applicable Laws and regulations relating to pollution
or  protection  of the  environment  (including  without  limitation,  laws  and
regulations relating to emissions,  discharges, releases and threatened releases
of Hazardous Materials (as hereinafter  defined)),  or otherwise relating to the
manufacture,   processing,  distribution,  use,  treatment,  storage,  disposal,
transport or handling of Hazardous Materials;

                  (b) There is no suit, claim, action, proceeding, investigation
or notice pending or, to the knowledge of S1 and its Subsidiaries threatened (or
past or present  actions  or events  that could form the basis of any such suit,
claim,  action,  proceeding,  investigation  or  notice),  in which S1 or any S1
Subsidiary  has been or, with  respect to  threatened  suits,  claims,  actions,
proceedings,  investigations  or notices may be,  named as a  defendant  (x) for
alleged  material  noncompliance  (including  by  any  predecessor),   with  any
environmental law, rule or regulation or (y) relating to any

                                      -13-
<PAGE>

material  release or threatened  release into the  environment  of any Hazardous
Material,  occurring  at or on a site owned,  leased or operated by S1 or any S1
Subsidiary,  or to the  knowledge  of S1,  relating to any  material  release or
threatened release into the environment of any Hazardous Material,  occurring at
or on a site not owned, leased or operated by S1 or any S1 Subsidiary;

                  (c) To the  knowledge of S1 and its  Subsidiaries,  during the
period  of S1's or any S1  Subsidiary's  ownership  or  operation  of any of its
properties,  there has not been any material release of Hazardous  Materials in,
on, under or affecting any such property; and

                  (d)  For  purposes  of this  Agreement,  the  term  "Hazardous
Material"  means  any  hazardous  waste,   petroleum  product,   polychlorinated
biphenyl, chemical, pollutant, contaminant, pesticide, radioactive substance, or
other toxic material,  or other material or substance (in each such case,  other
than small quantities of such substances in retail  containers)  regulated under
any applicable  environmental or public health statute, law, ordinance,  rule or
regulation.

         3.13     PROPERTIES AND ASSETS.

         Except  for  (a)  items  reflected  in  S1's   consolidated   financial
statements  as of  December  31, 1998  referred  to in Section  3.5 hereof,  (b)
exceptions  to  title  that  do not  interfere  materially  with  S1's or any S1
Subsidiary's  use and enjoyment of owned or leased real property,  (c) liens for
current real estate taxes not yet delinquent,  or being contested in good faith,
properly reserved against (and reflected on the financial statements referred to
in Section 3.5 above),  and (d) properties and assets sold or transferred in the
ordinary  course of business  consistent  with past practices since December 31,
1998,  S1 and each S1  Subsidiary  have good  and,  as to owned  real  property,
marketable  and insurable  title to all their  properties  and assets,  free and
clear of all  liens,  claims,  charges  and other  encumbrances.  S1 and each S1
Subsidiary,  as lessees,  have the right under  valid and  subsisting  leases to
occupy,  use and possess all property  leased by them, and neither S1 nor any S1
Subsidiary has experienced  any material  uninsured  damage or destruction  with
respect to such  properties  since  December 31, 1998. All properties and assets
used by S1 and each S1  Subsidiary  are in good  operating  condition and repair
suitable for the purposes  for which they are  currently  utilized and comply in
all material  respects with all Laws relating thereto now in effect or scheduled
to come into effect.  S1 and each S1 Subsidiary  enjoy peaceful and  undisturbed
possession under all leases for the use of all property under which they are the
lessees,  and all leases to which S1 or any S1  Subsidiary  is a party are valid
and binding obligations in accordance with the terms thereof. Neither S1 nor any
S1 Subsidiary is in material  default with respect to any such lease,  and there
has occurred no default by S1 or any S1 Subsidiary or event which with the lapse
of time or the giving of notice,  or both,  would  constitute a material default
under any such lease.  To the knowledge of S1, there are no Laws,

                                      -14-
<PAGE>

conditions of record, or other impediments which interfere with the intended use
by S1 or any S1 Subsidiary of any of the property owned,  leased, or occupied by
them.

         3.14     INSURANCE.

         The existing  insurance  carried by S1 and S1  Subsidiaries is and will
continue  to be, in respect of the nature of the risks  insured  against and the
amount of coverage  provided,  substantially  similar in kind and amount to that
customarily  carried by parties similarly situated who own properties and engage
in businesses  substantially similar to that of S1 and the S1 Subsidiaries,  and
is sufficient for compliance by S1 and the S1 Subsidiaries with all requirements
of Law and agreements to which S1 or any of the S1 Subsidiaries is subject or is
party.

         3.15     COMPLIANCE WITH APPLICABLE LAWS.

         Each of S1 and any S1 Subsidiary has complied in all material  respects
with all Laws  applicable to it or to the operation of its business.  Neither S1
nor any S1  Subsidiary  has  received  any  notice of any  material  alleged  or
threatened  claim,  violation,  or  liability  under  any such Laws that has not
heretofore been cured and for which there is any remaining liability.

         3.16     S1 INFORMATION.

         The information relating to S1 and each S1 Subsidiary to be provided by
S1 to be contained in the S1 Proxy Statement (as defined below) will not contain
any  untrue  statement  of a  material  fact or omit to  state a  material  fact
necessary to make the statements therein, in light of the circumstances in which
they are made, not misleading.

         3.17     INTELLECTUAL PROPERTY.

                  Except,  in each case,  as set forth in Section 3.17 of the S1
Disclosure Schedule:

                  (a) (i) S1 and its Subsidiaries  own, free and clear of liens,
orders and arbitration  awards,  or are licensed or otherwise  possess valid and
enforceable rights to use all patents,  trademarks,  trade names, service marks,
copyrights and any  applications  therefor,  schematics,  technology,  know-how,
trade secrets, ideas,  algorithms,  processes,  Software (as defined below), and
tangible  or  intangible  proprietary  information  or  material  ("Intellectual
Property") that are used in the business of S1 and its Subsidiaries.  "Software"
means any and all (i) computer programs and applications,  including any and all
software  implementations of algorithms,  models and  methodologies,  whether in
source code or object code, (ii) databases and  compilations,  including any and
all data and collections of data,

                                      -15-
<PAGE>

whether machine readable or otherwise, (iii) descriptions, flow-charts and other
work product used to design,  plan,  organize and develop any of the  foregoing,
(iv) the technology  supporting any Internet site(s) operated by or on behalf of
S1 or any of its Subsidiaries, and (v) all documentation, including user manuals
and training materials, relating to any of the foregoing.

                           (ii) Except as would not be materially adverse to the
business  of  S1 or  its  Subsidiaries,  S1  and  its  Subsidiaries  have  taken
reasonable steps to protect their Intellectual Property.  There is no litigation
pending  or, to the  knowledge  of S1 and its  Subsidiaries,  threatened  or any
written  claim from any person  challenging  the  ownership,  use,  validity  or
enforceability  of any  Intellectual  Property,  nor is there  any basis for the
assertion of any such claim or challenge.

                           (iii) No material  patent,  trademark,  service mark,
copyright,  trade secret, computer software or other intellectual property right
other  than  the  Intellectual  Property  set  forth on  Section  3.17 of the S1
Disclosure  Schedule  is  necessary  to  conduct  the  businesses  of S1 and its
Subsidiaries as presently conducted.

                  (b) Section 3.17 of the S1 Disclosure  Schedule  lists all (i)
patents,  patent  applications,  registered and unregistered  trademarks,  trade
names and service marks and registered  copyrights,  owned by S1 included in the
Intellectual  Property,  including the  jurisdictions in which each such item of
Intellectual  Property  right  has been  issued  or  registered  or in which any
application  for such issuance and  registration  has been filed,  (ii) material
licenses,  sublicenses and other  agreements as to which S1 and its Subsidiaries
are a  party  and  pursuant  to  which  any  person  is  authorized  to use  any
Intellectual Property,  and (iii) licenses,  sublicenses and other agreements as
to which S1 and its  Subsidiaries  are a party and  pursuant to which S1 and its
Subsidiaries  are  authorized  to use any third  party  patents,  trademarks  or
copyrights,  including  Software ("Third Party  Intellectual  Property  Rights")
which are incorporated in, are or form a part of any S1 or Subsidiary product.

                  (c) (i) To the knowledge of S1 and its Subsidiaries,  there is
no  unauthorized  use,  disclosure,  infringement  or  misappropriation  of  any
Intellectual  Property  rights  of S1 or  its  Subsidiaries,  any  trade  secret
material to S1 or its  Subsidiaries,  or any Intellectual  Property right of any
third party to the extent licensed by or through S1 or its Subsidiaries,  by any
employee of S1 or any S1 Subsidiary  or third party for whom S1 is  responsible.
Except as set forth in Section 3.17 of the S1 Disclosure Schedule,  there are no
royalties,  fees or other  payments  payable  by S1 or its  Subsidiaries  to any
person by reason of the  ownership,  use, sale or  disposition  of  Intellectual
Property.

                           (ii) To the  knowledge  of S1 and  its  Subsidiaries,
there has been no prior use of S1's  registered  trademarks  by any third  party
which would confer upon said third party superior rights in such trademarks.  S1
and its

                                      -16-
<PAGE>

Subsidiaries  have taken  reasonable  steps to adequately  police the trademarks
against third party infringement,  and the material trademarks registered in the
United  States  have been  continuously  used in the form  appearing  in, and in
connection with the goods and services listed in, their respective  registration
certificates or any amendment, supplement or office action related thereto.

                  (d) S1 and its  Subsidiaries  are not,  nor will  they be as a
result of the execution  and delivery of this  Agreement or the  performance  of
their  obligations  under this  Agreement,  in breach of any  material  license,
sublicense or other  agreement  relating to the  Intellectual  Property or Third
Party  Intellectual  Property  Rights,  and the  execution  and delivery of this
Agreement or the performance of the  obligations  under this Agreement by S1 and
its  Subsidiaries  will not result in the loss or impairment of, or give rise to
any  right  of  any  third  party  to  terminate,  any  of  S1's  or  any of its
Subsidiaries' rights to own any of its Intellectual Property or their respective
rights under any  material  license  agreements,  nor require the consent of any
Governmental Entity or third party in respect of any such Intellectual Property.

                  (e) S1 and its Subsidiaries  (i) have no knowledge  (including
knowledge of any litigation  pending or threatened or any written claim from any
person) or reason to believe that the conduct of their  businesses  infringe any
patent,  trademark,  service mark, copyright,  trade secret or other proprietary
right of any third  party;  and (ii) have not  advised any third party that such
third party may be infringing any Intellectual Property or breaching any license
or agreement involving  Intellectual Property and have not brought or threatened
any claim against such third party for such conduct.

                  (f) The  Software  owned or purported to be owned by S1 or any
of its  Subsidiaries,  was either (i) developed by employees of S1 or any of its
Subsidiaries within the scope of their employment; (ii) developed by independent
contractors  or  consultants  who have assigned their rights to S1 or any of its
Subsidiaries  pursuant to written agreements;  or (iii) otherwise acquired by S1
or its Subsidiary from a third party.

                  (g) All employees and independent  contractors and consultants
of  S1  and  its  Subsidiaries   have  executed  and  delivered  to  S1  or  its
Subsidiaries,  as the  case  may be,  agreements  regarding  the  protection  of
proprietary  information  and the  assignment to S1 or its  Subsidiaries  of any
Intellectual Property arising from services performed for S1 or its Subsidiaries
by such persons.

                  (h) S1 and its  Subsidiaries  have  obtained  or entered  into
written agreements with their employees and with third parties,  in transactions
deemed   appropriate,   in  connection   with  the  disclosure  to,  or  use  or
appropriation  by,  employees and third parties,  of trade secret or proprietary
information  owned by S1 and its Subsidiaries  and not otherwise  protected by a
patent, a patent application,

                                      -17-
<PAGE>

copyright,  trademark,  or other  registration or legal scheme ("S1 Confidential
Information"), and do not know of any situation involving such employee or third
party use, disclosure or appropriation of S1 Confidential  Information where the
lack of such a written  agreement  is likely to result in any  Material  Adverse
Effect.  Except  as set forth in  Section  3.17 of the S1  Disclosure  Schedule,
neither S1 nor any of its Subsidiaries  have furnished the source code of any of
their  Software  products to any third party,  deposited any such source code in
escrow, or otherwise provided access to such source code to any third party.

                  (i) Except as would not be materially  adverse to the business
of S1 or its  Subsidiaries,  S1 and its Subsidiaries have taken reasonable steps
with the intent of ensuring that their products (including existing products and
technology and products and technology  currently under  development) will, when
used in accordance  with  associated  documentation  on a specified  platform or
platforms, be capable upon installation of accurately processing, providing, and
receiving  date data from,  into,  and between the  twentieth  and  twenty-first
centuries, including the years 1999 and 2000, and making leap-year calculations,
provided  that all  other  non-S1 or S1  Subsidiary  products  (e.g.,  hardware,
software and firmware) used in or in combination with S1's or its  Subsidiaries'
products, properly exchange data with S1's and its Subsidiaries products.

SECTION 4.        REPRESENTATIONS AND WARRANTIES OF PURCHASERS.
                  ---------------------------------------------

                  Each of the Purchasers  severally and not jointly hereby makes
the following  representations and warranties to S1 as set forth in this Section
4 each of which is being  relied  upon by S1 as a material  inducement  to enter
into  and  perform  this  Agreement.  All of  the  disclosure  schedules  of the
Purchasers  referenced below and thereby required of the Purchasers  pursuant to
this Agreement,  which  disclosure  schedules shall be  cross-referenced  to the
specific sections and subsections of this Agreement and delivered herewith,  are
referred to herein as the "Purchasers' Disclosure Schedule."

         4.1      ORGANIZATION OF PURCHASERS.
                  ---------------------------

                  Such  Purchaser  not a natural  person is duly  organized  and
validly existing under the laws of the jurisdiction of its formation.

         4.2      AUTHORIZATION OF TRANSACTION.
                  -----------------------------

                  (a) If such Purchaser is not a natural person,  such Purchaser
has full power and  authority  to execute  and  deliver  this  Agreement  and to
perform its obligations hereunder.  The execution and delivery of this Agreement
and the  consummation  of the  transactions  contemplated  hereby have been duly
authorized

                                      -18-
<PAGE>


by all requisite  action on the part of such Purchaser and no other  proceedings
on the part of such  Purchaser  are  necessary to  consummate  the  transactions
contemplated  hereby.  This  Agreement  has been duly and validly  executed  and
delivered by such  Purchaser  and  (assuming  due  authorization,  execution and
delivery by S1 and FICS of this  Agreement)  will constitute a valid and legally
binding obligation of such Purchaser,  enforceable in accordance with its terms,
except as enforcement  may be limited by general  principles of equity,  whether
applied in a court of law or a court of equity and by bankruptcy, insolvency and
similar laws affecting  creditors' rights and remedies generally.  Except as set
forth in Section 4.2(a) of the  Purchasers'  Disclosure  Schedule,  no Purchaser
need give any notice  to,  make any filing  with,  or obtain any  authorization,
consent,  or  approval  of any  government  or  governmental  agency in order to
consummate the transactions contemplated by this Agreement.

                  (b) Such  Purchaser  acknowledges  that he, she or it has read
this  Agreement  and has been  provided  with,  or been  granted  access to, all
information  necessary to make his or her  decision to execute  this  Agreement.
Such  Purchaser  acknowledges  that his, her or its signature on this  Agreement
shall be  deemed  his,  her or its  written  consent  to the  execution  of this
Agreement and to the  consummation  of all of the  transactions  contemplated by
this  Agreement,  except for such consents,  approvals or filings the failure of
which to obtain will not have a Material  Adverse  Effect on the ability of such
Purchaser to consummate the transactions contemplated hereby.

         4.3      NON-CONTRAVENTION.
                  ------------------

                  Neither the execution and the delivery of this Agreement,  nor
the consummation of the transactions contemplated hereby, will (A) assuming that
the consents and approvals referred to in Section 4.2(a) are duly obtained,  (x)
violate  any Laws  applicable  to such  Purchaser  or any of its  properties  or
assets, or (y) violate, conflict with, result in a breach of any provision of or
the loss of any benefit  under,  constitute a default (or an event  which,  with
notice or lapse of time, or both, would  constitute a default) under,  result in
the termination of or a right of termination or cancellation  under,  accelerate
the  performance  required  by, or result in the  creation of any lien,  pledge,
security  interest,  charge  or other  encumbrance  upon  any of the  respective
properties  or assets of such  Purchaser  under any of the terms,  conditions or
provisions  of any note,  bond,  mortgage,  indenture,  deed of trust,  license,
lease, agreement or other instrument or obligation to which such Purchaser is or
will be, as the case may be, a party,  or by which such  Purchaser or any of its
properties or assets may be bound or affected or (B) if such  Purchaser is not a
natural person, violate any provisions of its organizational documents.

                                      -19-
<PAGE>


         4.4      BROKER'S FEES.
                  --------------

                  Except  for the fee  payable  to Credit  Suisse  First  Boston
("CSFB") in  accordance  with the terms of a letter  agreement  between CSFB and
FICS,  dated May 16, 1999,  such Purchaser has no liability or obligation to pay
any fees or  commissions  to any broker,  finder,  or agent with  respect to the
transactions  contemplated by this Agreement nor has such Purchaser  created any
such  liability or  obligation  which,  upon  consummation  of the  transactions
contemplated by this Agreement or the Transaction,  will become an obligation of
S1 or any subsidiary.

         4.5      ADEQUATE RESOURCES.
                  -------------------

                  Such  Purchaser  will have, at the time of the First  Closing,
the Second Closing and the Third Closing,  sufficient cash or other resources to
perform its obligations hereunder.

         4.6      NO LEGAL, TAX OR INVESTMENT ADVICE.
                  -----------------------------------

                  Such Purchaser  understands  that nothing in this Agreement or
any other materials  presented to such Purchaser in connection with the purchase
and sale of the Initial  Shares,  the 2000  Earn-out  Shares,  the 2001 Earn-out
Shares or the Transaction  constitutes  legal,  tax or investment  advice.  Such
Purchaser has consulted such legal,  tax and  investment  advisors as it, in its
sole  discretion,  has deemed  necessary or appropriate  in connection  with its
purchase of the Initial Shares.

         4.7      STATUS OF PURCHASERS.
                  ---------------------

                  Each of the  Purchasers  who are original  signatories to this
Agreement not  including any  Purchasers  joined to this  Agreement  pursuant to
Section 5.13 hereof  represent  that as of the date hereof,  such Purchaser is a
director, executive officer or other affiliate of FICS.

SECTION 5.        ADDITIONAL AGREEMENTS.
                  ----------------------

         5.1      LOCK-UP COVENANT.
                  -----------------

                  During the period beginning on the First Closing and ending on
the date 180 days after the First Closing,  each of the Akkermans,  Pamica N.V.,
General Atlantic Partners 20, L.P., GAP Coinvestment Partners,  L.P., or General
Atlantic  Partners  52,  L.P.,  covenant  that they will not,  without the prior
written  consent  of S1,  offer,  sell or  otherwise  dispose  of,  directly  or
indirectly,  any  capital  stock  of  S1  which  Purchasers  may  own  directly,
indirectly or beneficially; provided, however,

                                      -20-
<PAGE>

that any such  Purchaser  may  transfer  some or all of the Initial  Shares to a
corporation,  partnership or other legal entity  controlled by such Purchaser if
such transferee agrees in writing to hold any Initial Shares received subject to
the  provisions of this  Agreement  and to transfer such Initial  Shares back to
such Purchaser if such transferee ceases to be controlled by such Purchaser.

         5.2      S1 BOARD OF DIRECTORS.
                  ----------------------

                  5.2(a).  Effective  upon the  First  Closing,  S1  shall  have
adopted a resolution  pursuant to Section 3.2 of its Amended and Restated Bylaws
to increase  the size of its Board of  Directors  by at least two  members,  and
shall  thereupon  invite  Akkermans  and  one  other  individual  designated  by
Akkermans to serve as an additional  member (the "FICS Members") of the Board of
Directors  of S1 to serve for a term  expiring  at the third  successive  annual
meeting following the First Closing;  provided,  however,  that S1 shall have no
obligation  to invite any FICS  Member to serve on S1's Board if such  person is
not a member in good standing of the FICS Board of Directors  immediately  prior
to the First  Closing.  In  addition,  S1 shall have  amended  its  Amended  and
Restated  Bylaws to provide that for a period of two years  following  the First
Closing,  the  nominating  committee for  vacancies or additional  members shall
consist of all members of the Board of Directors.

                  5.2(b).  The parties  agree that,  as of the date of the First
Closing,  Akkermans  shall be  appointed  to hold the offices of  President  and
Chairman  of  the  Board  of   Directors   of  S1,  each  with  the  duties  and
responsibilities specified in the Amended and Restated Bylaws of S1.

         5.3      COMPLIANCE WITH ANTITRUST LAWS.
                  -------------------------------

                  Each of FICS,  the Purchasers and S1 shall make all filings of
any applications, notices or other documents required under applicable antitrust
Laws and use its reasonable  best efforts to resolve  objections,  if any, which
may be asserted with respect to the transactions  contemplated by this Agreement
or the Transaction  under antitrust laws,  including,  without  limitation,  the
Hart-Scott-Rodino  Antitrust  Improvements  Act of 1976,  as  amended  (the "HSR
Act").  In  the  event  a suit  is  threatened  or  instituted  challenging  the
transactions  contemplated  by this Agreement or the Transaction as violative of
antitrust  laws,  each of the Purchasers  and S1 shall use its  reasonable  best
efforts to avoid the filing of, or resist or resolve such suit.  The  Purchasers
and S1 shall use their  reasonable  best  efforts to take such  action as may be
required:  (a) by the  Antitrust  Division of the  Department  of Justice or the
Federal Trade  Commission in order to resolve such  objections as either of them
may have to the  transactions  contemplated by this Agreement or the Transaction
under antitrust laws, or (b) by any federal or state court of the United States,
in any suit brought by a private party or  Governmental  Entity  challenging the
transactions contemplated by this Agreement or the

                                      -21-
<PAGE>

Transaction  as violative of antitrust  laws, in order to avoid the entry of, or
to effect the dissolution of, any injunction,  temporary  restraining  order, or
other  order  which  has  the  effect  of  preventing  the  consummation  of the
transactions contemplated by this Agreement or the Transaction.  Reasonable best
efforts  shall not include,  among other things and to the extent S1 so desires,
the  willingness  of S1 to accept an order agreeing to the  divestiture,  or the
holding separate, of any assets of FICS or S1.

         5.4      REGULATORY MATTERS.
                  -------------------

                  5.4(a). Upon the execution and delivery of this Agreement,  S1
and the Purchasers  shall promptly cause to be prepared and filed with the SEC a
proxy  statement and prospectus  (the "S1 Proxy  Statement")  for soliciting the
approval of this Agreement and the S1 Issuance by the stockholders of S1. The S1
Proxy  Statement may be included in a  registration  statement on an appropriate
registration  form  prepared  pursuant to Section  5.8 hereof.  S1 shall use its
reasonable  best efforts to have the S1 Proxy  Statement  cleared for use by the
SEC as soon as  possible  after the  filing.  The  parties  shall  cooperate  in
responding  to and  considering  any  questions  or comments  from the SEC staff
regarding the information  contained in the S1 Proxy  Statement.  If at any time
after the S1 Proxy Statement is filed with the SEC, and prior to the date of the
First Closing,  any event relating to FICS is discovered by the Purchasers which
should  be set  forth in an  amendment  of,  or a  supplement  to,  the S1 Proxy
Statement,  the Purchasers  shall promptly  inform S1, and shall furnish S1 with
all necessary  information  relating to such event  whereupon S1 shall  promptly
cause an  appropriate  amendment to the S1 Proxy  Statement to be filed with the
SEC. S1 (if prior to the meeting of stockholders pursuant to Section 4.5 hereof)
shall  take all  necessary  action  as  promptly  as  practicable  to  permit an
appropriate  amendment  or  supplement  to be  transmitted  to its  stockholders
entitled to vote at such meeting. If at any time after the S1 Proxy Statement is
filed  with the SEC,  and  prior to the date of the  First  Closing,  any  event
relating to S1 is discovered by S1 which should be set forth in an amendment of,
or a  supplement  to,  the S1 Proxy  Statement,  S1 shall  promptly  inform  the
Purchasers,  and S1 shall promptly  cause an appropriate  amendment to the Proxy
Statement to be filed with the SEC. S1 (if prior to the meeting of  stockholders
pursuant to Section 4.5 hereof) shall take all  necessary  action as promptly as
practicable to permit an  appropriate  amendment or supplement to be transmitted
to its stockholders entitled to vote at such meeting.

                  5.4(b). The parties hereto shall cooperate with each other and
use their  reasonable  best efforts to promptly  prepare and file all  necessary
documentation,  to effect all applications,  notices, petitions and filings, and
to obtain as  promptly as  practicable  all  permits,  consents,  approvals  and
authorizations  of  all  third  parties  and  Governmental  Entities  which  are
necessary or advisable  to  consummate  the  transactions  contemplated  by this
Agreement.  S1 and the Purchasers shall have the right to review in advance, and
to the extent  practicable  each will consult the other

                                      -22-
<PAGE>

on,  in each case  subject  to  applicable  laws  relating  to the  exchange  of
information,  all the information relating to S1 or the Purchasers,  as the case
may be, which  appears in any filing made with, or written  materials  submitted
to,  any  third  party  or  any  Governmental  Entity  in  connection  with  the
transactions  contemplated by this Agreement;  provided,  however,  that nothing
contained  herein shall be deemed to provide either party with a right to review
any information  provided to any Governmental  Entity on a confidential basis in
connection with the transactions  contemplated hereby; and further provided that
S1 and Akkermans  shall  mutually  agree on any such  information  regarding the
structure or purpose of the structure of the  transactions  contemplated by this
Agreement  and the  Holdings  Purchase  Agreement  prior to its  appearance.  In
exercising the foregoing right,  each of the parties hereto shall act reasonably
and as promptly as practicable.  The parties hereto agree that they will consult
with  each  other  with  respect  to the  obtaining  of all  permits,  consents,
approvals  and  authorizations  of all third parties and  Governmental  Entities
necessary or advisable  to  consummate  the  transactions  contemplated  by this
Agreement  and each party will keep the other  apprised of the status of matters
relating to contemplation of the transactions contemplated herein.

                  5.4(c).  The Purchasers shall,  upon request,  furnish S1 with
all information concerning FICS and its directors, officers and stockholders and
such other  matters as may be  reasonably  necessary or advisable in  connection
with  the  S1  Proxy  Statement  or  any  other  statement,  filing,  notice  or
application made by or on behalf of S1 to any Governmental  Entity in connection
with the transactions contemplated by this Agreement or the Transaction.

                  5.4(d). S1 and the Purchasers shall promptly advise each other
upon receiving any communication  from any Governmental  Entity whose consent or
approval is required for consummation of the  transactions  contemplated by this
Agreement  which  causes  such  party to  believe  that  there  is a  reasonable
likelihood  that any Requisite  Regulatory  Approval (as defined in the Holdings
Purchase  Agreement)  will  not be  obtained  or that  the  receipt  of any such
approval will be materially delayed.

         5.5      STOCKHOLDER MEETING.
                  --------------------

                  S1 shall take all steps  necessary  to duly call,  give notice
of, convene and hold a meeting of its  stockholders  within 45 days after the S1
Proxy  Statement  is  approved by the SEC for use for the purpose of voting upon
the approval of this Agreement and the S1 Issuance.  Management and the Board of
Directors  of S1 shall  recommend  approval  of each of this  Agreement,  the S1
Issuance and the Transaction.

                                      -23-
<PAGE>

        5.6       LEGAL CONDITIONS.
                  -----------------

                  Each of S1 and the Purchasers  shall use their reasonable best
efforts  (a) to take,  or cause to be taken,  all actions  necessary,  proper or
advisable to comply promptly with all legal requirements which may be imposed on
such party with respect to the  transactions  contemplated  by this Agreement or
the Transaction and, subject to the conditions set forth in Section 6 hereof, to
consummate  the  transactions  contemplated  by this Agreement and (b) to obtain
(and to cooperate  with the other party to obtain) any  consent,  authorization,
order or approval of, or any exemption by, any Governmental Entity and any other
third  party  which  is  required  to be  obtained  by the  Purchasers  or S1 in
connection with transactions contemplated by this Agreement or the Transaction.

         5.7      STOCK EXCHANGE LISTING.
                  -----------------------

                  S1 shall  cause the  Initial  Shares,  the 2000 Shares and the
2001 Shares to be approved for  quotation  on the Nasdaq  Stock Market  National
Market System  ("Nasdaq")  (or such other  exchange on which the S1 Common Stock
has become listed, or approved for listing) prior to the First Closing.

         5.8      REGISTRATION OF S1 COMMON STOCK.
                  --------------------------------

                  Upon the execution and delivery of this Agreement, S1 and FICS
(as to  information  to be included  therein  pertaining to FICS) shall promptly
cause to be prepared  and filed with the SEC a  registration  statement of S1 on
Form  S-4,   including  the  Proxy   Statement/Prospectus   (the   "Registration
Statement")  for the purpose of registering  the S1 Common Stock  (including the
2000 Shares and the 2001 Shares) to be issued  pursuant to this  Agreement,  and
for soliciting the approval of this Agreement by the  stockholders of S1. S1 and
FICS shall use their reasonable best efforts to have the Registration  Statement
declared  effective by the SEC as soon as possible after the filing. The parties
shall each  promptly  notify the other upon the receipt of any comments from the
SEC or its staff, or any other  governmental  officials,  supply each other with
all such  correspondence  with any Governmental  Entity other than  confidential
information,  and cooperate in responding  to and  considering  any questions or
comments  from  the  SEC  staff  regarding  the  information  contained  in  the
Registration Statement. If at any time after the Registration Statement is filed
with the SEC, and prior to the First  Closing,  any event relating to S1 or FICS
is  discovered  by such party which should be set forth in an amendment of, or a
supplement  to,  the  Registration  Statement,  including  the  Prospectus/Proxy
Statement,  such party shall  promptly  inform the other,  and shall furnish all
necessary  information  relating to such event whereupon the  appropriate  party
shall promptly cause an appropriate  amendment to the Registration  Statement or
supplement to the Prospectus/Proxy  Statement to be filed with the SEC. Upon the
effectiveness  of such  amendment  or  supplement,  the parties (if prior to the
meeting of stockholders  pursuant to Section

                                      -24-
<PAGE>

5.5 hereof) will take all necessary  action as promptly as practicable to permit
an appropriate  amendment or supplement to be transmitted to the S1 stockholders
entitled to vote at such meeting. S1 shall also use reasonable efforts to obtain
all necessary state securities law or "Blue Sky" permits and approvals  required
to carry out the transactions  contemplated by this Agreement.  Each party shall
furnish  all  information  as may  be  reasonably  requested  by  the  other  in
connection with any such action.

         5.9      RESALE OF AKKERMANS' S1 COMMON STOCK.
                  -------------------------------------

                  Prior  to the  First  Closing,  S1  shall  either  (i)  file a
registration  statement  on an  appropriate  form (the  "Akkermans  Registration
Statement")  with the SEC and use its commercially  reasonable  efforts to cause
the Akkermans  Registration  Statement to be declared  effective  upon the First
Closing (or such later date as Akkermans may request) to effect the registration
under  the  Securities  Act of 1933 as  amended  (the  "Securities  Act") of the
Akkermans  Registration  Statement for the resale by Akkermans of such amount of
shares of S1 Common  Stock as  determined  by  Akkermans  not later than the day
before the First Closing,  but in no event greater than an amount of shares (the
"Resale Shares") the net proceeds from the sale of which (after giving effect to
underwriting  fees,  expenses,  commissions and discounts) shall be equal to (A)
(x) 0.18 multiplied by (y) $35.75,  multiplied by (z) the number of shares of S1
Common  Stock he  beneficially  acquires in the First  Closing  pursuant to this
Agreement,  plus (B)  $15,000,000,  on customary terms and under then prevailing
market  conditions,  at a per share  offering  price as  determined by S1 in its
reasonable  judgment  to be  fair  and  adequate  to  Akkermans,  or  (ii)  make
arrangements  for Akkermans to sell the Resale  Shares  pursuant to an exemption
from  registration  under the  Securities  Act with the same net proceeds as set
forth in subsection (i) of this paragraph and on substantially  similar terms to
those  specified  in  subsection  (i)  of  this  paragraph,   including  without
limitation the per share offering price.

         5.10     REGISTRATION PROCEEDINGS.
                  -------------------------

                  S1 shall conduct all registration proceedings pursuant to this
Agreement in accordance with the following:

                           (1) S1 shall use its commercially reasonable efforts,
but shall not be required, to conduct an underwritten offering.

                           (2) If, after it becomes effective, such registration
statement is  interfered  with by any stop order,  injunction  or other order or
requirement of the SEC or any other  governmental  authority,  such registration
shall not be deemed to have been effected unless such stop order,  injunction or
other order shall have been subsequently vacated or removed.

                                      -25-
<PAGE>

                           (3)  S1  shall,   subject   to  the  other   relevant
provisions of this Agreement:

                                (A) use its commercially  reasonable  efforts to
cause the registration statement to become ffective as soon as practicable after
the filing thereof;

                                (B) prepare and file with the SEC as promptly as
is reasonably  practicable  (and in any event ithin 60 days after such amendment
or  supplement  becomes  necessary)  such  amendments  and  supplements  to  the
registration  statement  contained  therein  as may be  necessary  to keep  such
registration  statement  effective for the respective periods specified or until
each  Purchaser has completed the  distribution  described in such  registration
statement, whichever occurs first;

                                (C) furnish to Purchasers  such number of copies
of such registration statement, each mendment and supplement thereto as they may
reasonably request;

                                (D) use its commercially  reasonable  efforts to
register  or  qualify  such  shares  under the state blue sky or  securities  or
banking laws ("Blue Sky Laws") of such  jurisdictions  as Purchasers  reasonably
request  (and to keep such  registrations  and  qualifications  effective  for a
period of no less than one year following the First Closing, or until Purchasers
have completed the distribution of such shares,  whichever occurs first), and to
do any and all  other  acts and  things  that  may be  reasonably  necessary  or
advisable to enable such Purchasers to consummate the disposition of such shares
in such jurisdictions; provided, however, that S1 will not be required to do any
of the following: (i) qualify generally to do business in any jurisdiction where
it would not be required  but for this  Section  5.10,  (ii)  subject  itself to
taxation in any such jurisdiction,  or (iii) file any general consent to service
of process in any such jurisdiction;

                                (E)  promptly  notify  Purchasers  at  any  time
during  the  period  that S1 is  required  to keep  the  registration  statement
effective, of the occurrence of any event as a result of which such registration
statement  contains  an untrue  statement  of a material  fact or omits any fact
necessary to make the statements therein in the light of the circumstances under
which they were made, not  misleading,  and prepare a supplement or amendment to
the registration statement so that, as thereafter delivered to the purchasers of
such shares, the registration  statement will not contain an untrue statement of
a  material  fact or omit to state  any fact  necessary  to make the  statements
therein,  in the light of the  circumstances  under  which they were  made,  not
misleading;

                                      -26-
<PAGE>

                                (F) use commercially reasonable efforts to cause
all such shares to be listed on Nasdaq or such other national  exchange on which
S1 Common Stock shall then be listed; and

                                (G) provide a transfer  agent and  registrar (if
S1 does not  already  have such an agent) for all such shares not later than the
effective date of such registration statement.

                           (4) If,  pursuant  to this  Section  5.10,  S1 Common
Stock owned by a Purchaser is included in a  registration  statement,  then such
Purchaser shall pay all transfer  taxes, if any,  relating to the sale of its S1
Common Stock, the fees and expenses of its own counsel, and its pro rata portion
of any underwriting discounts or commissions or the equivalent thereof.

                           (5) Except  for the fees and  expenses  specified  in
paragraph (4) of this Section 5.10 and except as provided this paragraph (5), S1
shall pay all expenses  incident to the  registration and to S1's performance of
or  compliance  with this  Agreement,  including,  without  limitation,  all SEC
registration  and filing  fees,  fees and expenses of  compliance  with Blue Sky
Laws, underwriting  discounts,  fees, and expenses (other than a Purchaser's pro
rata portion of any  underwriting  discounts or  commissions  or the  equivalent
thereof),  printing  expenses,  messenger  and delivery  expenses,  and fees and
expenses of counsel for S1 and all independent  certified public accountants and
other persons retained by S1.

                           (6)  Each   Purchaser   (for  the  purposes  of  this
paragraph (6), the "Indemnifying  Person") agrees to indemnify and hold harmless
S1, each of S1's officers and directors,  and each person,  if any, who controls
or may control S1 within the meaning of the  Securities Act (for the purposes of
this paragraph  (6), S1, its officers and directors,  and any such other persons
being referred to individually as an  "Indemnified  Person" and  collectively as
"Indemnified  Persons") from and against all demands,  claims, actions or causes
of action,  assessments,  losses,  damages,  liabilities,  costs,  and expenses,
including,  without limitation,  interest,  penalties, and reasonable attorneys'
fees and  disbursements,  asserted  against,  resulting  to,  imposed  upon,  or
incurred  by such  Indemnified  Person,  directly or  indirectly  (collectively,
referred to for purposes of this paragraph (vii) and the corresponding provision
of  paragraph  (viii)  below in the  singular  as a "Claim" and in the plural as
"Claims"), based upon, arising out of, or resulting from any untrue statement of
a material fact contained in the registration statement or any omission to state
therein a material fact necessary in order to make the statements  made therein,
in the light of the circumstances under which they were made, not misleading, to
the extent  that such  Claim is based  upon,  arises out of or results  from any
untrue  statement  or omission  based upon  information  furnished to S1 by such
Purchaser in a written document provided by such Purchaser for use in connection
with the Registration Statement; provided that such Purchaser will not

                                      -27-
<PAGE>


be liable in any such case to the extent that any such Claim arises out of or is
based upon an untrue  statement  or alleged  untrue  statement  or  omission  or
alleged  omission  made in such  registration  statement in reliance  upon or in
conformity  with written  information  furnished  to such  Purchaser by S1 or an
underwriter in connection with the registration  statement  specifically for use
in the preparation thereof.

                           (7) S1 (for the purposes of this  paragraph  (7), the
"Indemnifying  Person")  agrees to indemnify and old harmless the Purchasers and
any  underwriters  participating in the distribution of S1 Common Stock pursuant
to a  registration  statement  (for the  purposes  of this  paragraph  (7),  the
Purchasers and any such other persons also being referred to  individually as an
"Indemnified Person" and collectively as "Indemnified Persons") from and against
all Claims based upon, arising out of, or resulting from any untrue statement of
a material fact contained in the registration statement or any omission to state
therein a material fact  necessary in order to make the statement  made therein,
in the light of the  circumstances  under which they were made, not  misleading,
provided that S1 will not be liable in any such case to the extent that any such
Claim arises out of or results from any untrue  statement or omission based upon
information  furnished to S1 by any Purchaser in a written document  provided by
such Purchaser for use in connection with the registration statement.

                           (8) The  indemnification set forth herein shall be in
addition to any liability S1 or any  Purchaser may otherwise  have in connection
with any  registration  of S1  Common  Stock.  Within a  reasonable  time  after
receiving  definitive  notice of any Claim in  respect  of which an  Indemnified
Person may seek indemnification under this Section 5.10, such Indemnified Person
shall submit written notice thereof to such Indemnifying  Person. The failure of
the Indemnified  Person so to notify the  Indemnifying  Person of any such Claim
shall  not  relieve  the  Indemnifying  Person  from any  liability  it may have
hereunder  except to the extent that (a) such  liability was caused or increased
by such omission,  or (b) the ability of the Indemnifying  Person to reduce such
liability was materially adversely affected by such omission.  In addition,  the
omission of the Indemnified  Person so to notify the Indemnifying  Person of any
such Claim shall not relieve the  Indemnifying  Person from any liability it may
have otherwise than hereunder.  The Indemnifying  Person shall have the right to
undertake,  by counsel or  representatives  of its own  choosing,  the  defense,
compromise,  or  settlement  (without  admitting  liability of the  Indemnifying
Person) of any such Claim asserted, such defense,  compromise,  or settlement to
be  undertaken  at the  expense  and risk of the  Indemnifying  Person,  and the
Indemnified  Person shall have the right to engage separate counsel,  at its own
expense,  which  counsel for the  Indemnifying  Person  shall keep  informed and
consult with in a reasonable manner. In the event the Indemnifying  Person shall
fail to undertake  such  defense by its own  representatives,  the  Indemnifying
Person  shall give prompt  written  notice of such  election to the  Indemnified
Person, and the

                                      -28-
<PAGE>

Indemnified  Person shall  undertake  the  defense,  compromise,  or  settlement
(without admitting liability of the Indemnified Person) thereof on behalf of and
for the  account  and  risk of the  Indemnifying  Person  by  counsel  or  other
representatives  designated  by the  Indemnified  Person.  In the event that any
Claim shall arise out of a transaction or cover any period or periods wherein S1
and any  Purchaser  shall each be liable  hereunder for part of the liability or
obligation  arising  therefrom,  then the parties  shall,  each choosing its own
counsel and bearing its own  expenses,  defend such Claim,  and no settlement or
compromise of such Claim may be made without the joint consent or approval of S1
and such Purchaser.  Notwithstanding the foregoing, no Indemnifying Person shall
be obligated  hereunder  with respect to amounts paid in settlement of any Claim
if such settlement is effected without the consent of such  Indemnifying  Person
(which consent shall not be unreasonably withheld).

                           (9)  If the  indemnification  provided  for  in  this
Section 5.10 is held by a court of competent  jurisdiction  to be unavailable to
an Indemnified Party (as defined in either paragraph (6) or (7)) with respect to
any Claim, then such Purchaser or S1, as applicable and as the case may be (each
an  "Indemnifying   Party"),  in  lieu  of  indemnifying  an  Indemnified  Party
hereunder,  shall  contribute to the amount paid or payable by such  Indemnified
Party as a result of such Claim in such  proportion as is appropriate to reflect
the  relative  fault  of the  Indemnifying  Party  on the  one  hand  and of the
Indemnified  Party on the other in connection  with the  statements or omissions
which resulted in such claim.

         5.11     CONDUCT OF S1'S BUSINESS.
                  -------------------------

                  During  the  period  from  the  date  of  this  Agreement  and
continuing  until the earlier of the  termination of this Agreement or the First
Closing,  except with  respect to (i) the certain  Agreement  and Plan of Merger
dated as of May 16, 1999 by and among S1, Sahara Strategy  Corporation and Edify
Corporation,  and (ii) the certain Stock Purchase and Option  Agreement dated as
of May 16, 1999 by and between S1 and Intuit  Inc.,  prior to entering  into any
such agreement S1 agrees to consult with the Purchasers and reasonably  consider
their views with respect to any transactions  having a value over $50,000,000 in
which S1 proposes to engage.

         5.12     ADVICE OF CHANGES.
                  ------------------

                  S1 and the Purchasers shall promptly advise the other party of
any change or event  that,  individually  or in the  aggregate,  has or would be
reasonably  likely  to have a  Material  Adverse  Effect  on it or to  cause  or
constitute  a  material  breach  of any of its  representations,  warranties  or
covenants  contained herein.  From time to time prior to the First Closing Date,
each party will promptly  supplement or amend its disclosure  schedule delivered
in connection  with the execution of this Agreement to reflect any matter which,
if existing,  occurring or known at the date of

                                      -29-
<PAGE>

this  Agreement,  would have been  required to be set forth or described in such
disclosure  schedule or which is  necessary to correct any  information  in such
disclosure schedule which has been rendered inaccurate thereby. No supplement or
amendment to such  disclosure  schedule shall have any effect for the purpose of
determining  satisfaction  of the  conditions  set forth in  Sections  6.2(a) or
6.3(a) hereof, as the case may be.

         5.13     JOINDER OF ADDITIONAL PURCHASERS.
                  ---------------------------------

                  Prior to the First  Closing,  S1 hereby agrees to send, at the
same  time and in the same  manner as to the S1  stockholders,  a copy of the S1
Proxy  Statement and a copy of this  Agreement to each of the FICS  shareholders
who is not an original signatory to this Agreement.  Prior to the First Closing,
S1 and the Purchasers  hereby agree that such  individuals  shall be offered the
opportunity  to join this  Agreement as an  additional  Purchaser by  indicating
acceptance of the terms of this Agreement by a writing signed by such individual
stating  that  such  individual  (i) has read the S1  Proxy  Statement  and this
Agreement,  (ii) fully  understands  this risks involved in proceeding  with the
transaction  contemplated  by this  Agreement,  and  (iii)  agrees  to join this
Agreement as a Purchaser.

SECTION 6.        CONDITIONS TO FIRST CLOSING.
                  ----------------------------

         6.1      CONDITIONS TO OBLIGATIONS OF ALL PARTIES.
                  -----------------------------------------

                  The  obligations of each party to consummate the  transactions
contemplated by this Agreement are subject to the satisfaction, on or before the
date of the First Closing, of each of the following conditions precedent:

                  6.1(a).  Termination.  Neither this Agreement nor the Holdings
Purchase Agreement shall have been terminated in accordance with its terms.

                  6.1(b). No Governmental  Action. No action or proceeding by or
before any governmental  authority shall have been instituted or threatened (and
not subsequently dismissed, settled or otherwise terminated) which is reasonably
expected to restrain,  prohibit or invalidate the  transactions  contemplated by
this  Agreement or to affect  adversely  the  financial  condition  and business
prospects of S1.

         6.2      CONDITIONS TO THE OBLIGATIONS OF PURCHASERS.
                  --------------------------------------------

                  The  obligations  of Purchasers to purchase the Initial Shares
as contemplated by this Agreement are subject to the satisfaction,  on or before
the

                                      -30-
<PAGE>

date of the First Closing, of each of the following  conditions  precedent,  any
one or more of which may be waived by the written consent of the Purchasers:

                  6.2(a).  Representations  and Warranties.  The representations
and  warranties  of S1 contained in this  Agreement  shall be true,  correct and
complete in all material respects when made and shall be true and correct on the
date of the First Closing, with the same force and effect as if made on the date
of the First Closing.

                  6.2(b).  Compliance  with  Covenants.  S1  shall  have  in all
material respects performed all obligations and agreements and complied with all
covenants contained in this Agreement to be performed and complied with by S1 on
or prior to the date of the First Closing.

                  6.2(c).  Akkermans  Resale  Agreement.  At the First  Closing,
either (i) the  Akkermans  Registration  Statement  shall be able to be declared
effective by the SEC,  subject only to completion of the Closing (and the action
of the SEC thereafter to declare said Registration  Statement  effective) and an
underwriting agreement in reasonable and customary form shall have been prepared
and executed by S1 and the lead  underwriter for the offering of S1 Common Stock
described in the prospectus  constituting  a part of the Akkermans  Registration
Statement,  and  shall be ready for use upon  execution  by  Akkermans,  or (ii)
arrangements  shall  have  been made for  Akkermans  to sell the  Resale  Shares
pursuant  to  an  exemption  from  registration  under  the  Securities  Act  on
substantially  similar terms to those specified in subsection (i) of Section 5.9
hereof, including without limitation the per share offering price.

                  6.2(d)  Transaction.   The  Transaction  contemplated  by  the
Holdings Purchase Agreement shall have been consummated.

                  6.2(e)  Registration  Statement.  The  Registration  Statement
shall  have  been  declared   effective  and  no  stop  order   suspending   the
effectiveness  of the  Registration  Statement  shall have been issued under the
Securities Act.

         6.3      CONDITIONS TO OBLIGATIONS OF S1.
                  --------------------------------

                  The   obligations   of  S1  to  sell  the  Initial  Shares  as
contemplated by this Agreement are subject to the satisfaction, on or before the
date of the First Closing, of each of the following  conditions  precedent,  any
one or more of which may be waived by S1, in its sole and absolute discretion:

                  6.3(a).  Representations  and Warranties.  The representations
and warranties of Purchasers  contained in this Agreement shall be true, correct
and complete in all material respects when made and shall be true and correct as
of the

                                      -31-
<PAGE>

date of the First  Closing with the same force and effect as if made on the date
of the First Closing.

                  6.3(b).  Compliance with Covenants.  Purchasers and FICS shall
have in all material  respects  performed all  obligations  and  agreements  and
complied  with all  covenants  contained in this  Agreement to be performed  and
complied with by it on or prior to the date of the First Closing.

SECTION 7.        CLOSINGS.
                  ---------

         7.1      DELIVERIES BY S1.
                  -----------------

                  7.1(a).  At the First Closing,  S1 shall deliver to Purchasers
the following:

                           (1)  Certificates  registered in  Purchasers'  names,
representing  all of the  Initial  Shares in the mounts set forth in Section 1.1
above.

                           (2) A  copy  of  the  resolutions  of  the  Board  of
Directors of S1, as certified as of the First  Closing Date by the  Secretary or
other appropriate officer of S1, as being true, correct and complete and then in
full force and effect,  authorizing  the execution,  delivery and performance of
this  Agreement  by S1, the  authorization,  sale,  issuance and delivery of the
Initial Shares, and the performance of S1's obligations hereunder.

                           (3) A  certificate  of  S1  signed  by an  authorized
officer of S1  certifying  that the  representations  and  warranties of S1 made
herein are true, complete and correct in all material respects as of the date of
this Agreement and are true and correct as of the date of the First Closing, and
S1 has in all material  respects  performed all  obligations  and agreements and
complied with all  covenants  required to be performed or complied with by S1 on
or prior to the First Closing.

                           (4) Successor  Options and related option  agreements
for each option delivered pursuant to Section 2.1 above.

                           (5) Additional  Options and related option agreements
for each option delivered pursuant to Section 2.2 above.

                           (6) Such other certificates, instruments or documents
as  Purchasers  may  reasonably  request  in order to effect  and  document  the
transactions contemplated hereby.

                                      -32-
<PAGE>

                           (7) An update of S1's Disclosure  Schedule reflecting
any change  required as if the Agreement  were being  executed as of the date of
the First Closing.

                  7.1(b) At the Second  Closing,  S1 shall deliver to Purchasers
the following:

                           (1)  Certificates  registered in  Purchasers'  names,
representing all of the 2000 Earn-out Shares in the amounts set forth in Section
1.2 above.

                           (2) Such other certificates, instruments or documents
as  Purchasers  may  reasonably  request  in  order to ffect  and  document  the
transactions contemplated hereby.

                  7.1(c) At the Third  Closing,  S1 shall  deliver to Purchasers
the following:

                           (1)  Certificates  registered in  Purchasers'  names,
representing all of the 2001 Earn-out Shares in the amounts set forth in Section
1.2 above.

                           (2) Such other certificates, instruments or documents
as  Purchasers  may  reasonably  request  in order to effect  and  document  the
transactions contemplated hereby.

         7.2      DELIVERIES BY PURCHASERS.
                  -------------------------

                  7.2(a). At the First Closing,  the Purchasers shall deliver to
S1 the following:

                           (1) The  Initial  Share  Consideration,  in the  form
determined pursuant to Section 1.1(b) hereof.

                           (2) A certificate  of each  Purchaser  signed by such
Purchaser  or an  authorized  officer  of such  Purchaser  certifying  that  the
representations  and warranties of such Purchaser made herein are true, complete
and correct in all material  respects as of the date of this  Agreement  and are
true and correct as of the date of the First Closing,  and such Purchaser has in
all material respects performed all obligations and agreements and complied with
all covenants required to be performed or complied with by Purchaser on or prior
to the First Closing.

                           (3) If the Purchaser is not a natural person,  a copy
of the resolutions or other corporate documentation,  certified by the Secretary
of such Purchaser as being true, correct and complete and then in full force and
effect, authorizing the execution, delivery and performance by Purchaser of this
Agreement, Purchaser's obligations hereunder and the Transaction.

                                      -33-
<PAGE>

                           (4) Such other certificates, instruments or documents
as S1 may  reasonably  request in order to effect nd  document  the  transaction
contemplated hereby.

                           (5) An update of the Purchasers'  Disclosure Schedule
reflecting any change required as if the Agreement were being executed as of the
date of the First Closing.

                  7.2(b). At the Second Closing, the Purchasers shall deliver to
S1 the following:

                           (1) The  2000  Earn-out  Consideration,  in the  form
determined pursuant to Section 1.3(c) hereof.

                           (2) Such other certificates, instruments or documents
as S1 may  reasonably  request in order to effect and document  the  transaction
contemplated hereby.

                  7.2(c). At the Third Closing,  the Purchasers shall deliver to
S1 the following:

                           (1) The  2001  Earn-out  Consideration,  in the  form
determined pursuant to Section 1.3(c) hereof.

                           (2) Such other certificates, instruments or documents
as S1 may  reasonably  request in order to effect and document  the  transaction
contemplated hereby.

SECTION 8.        LEGEND.
                  -------

         8.1      ENDORSEMENT.
                  ------------

                  8.1(a) Certificates  representing the Initial Shares delivered
to the Purchasers  subject to the lock-up period specified in Section 5.1, shall
bear the  following  legend (in  addition to the legends  specified  by Sections
8.1(b) and 8.1(c) hereof,  if applicable,  and any legend required by applicable
state securities laws):

                  THE TRANSFER OF THE SHARES  REPRESENTED BY THIS CERTIFICATE IS
           SUBJECT  TO  CERTAIN  RESTRICTIONS  SPECIFIED  IN THE STOCK  PURCHASE
           AGREEMENT II DATED  SEPTEMBER 21, 1999 (THE  "AGREEMENT")  BETWEEN S1
           AND THE ORIGINAL PURCHASER,  AND NO TRANSFER OF SHARES SHALL BE VALID
           OR EFFECTIVE ABSENT COMPLIANCE WITH SUCH RESTRICTIONS. ALL SUBSEQUENT
           HOLDERS OF THIS

                                      -34-
<PAGE>

           CERTIFICATE  WILL HAVE  AGREED TO BE BOUND BY CERTAIN OF THE TERMS OF
           THE AGREEMENT.  COPIES OF THE AGREEMENT MAY BE OBTAINED AT NO COST BY
           WRITTEN REQUEST MADE BY THE REGISTERED  HOLDER OF THIS CERTIFICATE TO
           THE SECRETARY OF S1.



                  8.1(b) Certificates  representing the Initial Shares delivered
to each of  Akkermans,  Pamica N.V.,  General  Atlantic  Partners 20, L.P.,  GAP
Coinvestment  Partners,  L.P., General Atlantic Partners 52, L.P., and GIMV N.V.
shall bear the  following  legend  (in  addition  to the  legends  specified  by
Sections  8.1(a) and 8.1(c) hereof,  if applicable,  and any legend  required by
applicable state securities laws):

                   THE SHARES  EVIDENCED  BY THIS  CERTIFICATE  WERE ISSUED IN A
           TRANSACTION TO WHICH RULE 145 PROMULGATED UNDER THE SECURITIES ACT OF
           1933 APPLIES.  UNTIL  SEPTEMBER 21, 2000, THE SECURITIES  REPRESENTED
           HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE  TRANSFERRED,  ASSIGNED,
           PLEDGED OR HYPOTHECATED EXCEPT IN COMPLIANCE WITH SUCH RULE OR UNLESS
           AND UNTIL REGISTERED UNDER THE SECURITIES ACT OF 1933.

                  8.1(c)  Certificates  representing  the Initial Shares and the
Earn-out  Shares  delivered to the FICS Members shall bear the following  legend
(in addition to the legends  specified by Sections 8.1(a) and 8.1(b) hereof,  if
applicable, and any legend required by applicable state securities laws):

                  THE SECURITIES  REPRESENTED HEREBY MAY NOT BE OFFERED, SOLD OR
           OTHERWISE TRANSFERRED,  ASSIGNED,  PLEDGED OR HYPOTHECATED UNLESS AND
           UNTIL  REGISTERED  UNDER THE  SECURITIES ACT OF 1933 OR UNLESS S1 HAS
           RECEIVED  AN OPINION OF COUNSEL  SATISFACTORY  TO THE COMPANY AND ITS
           COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED.

         8.2      REMOVAL OF LEGEND.
                  ------------------

                  For each stock  certificate  that has been  endorsed  with the
legend pursuant to Section 8.1(a) hereof,  insofar as it relates to restrictions
specified in this Agreement, such paragraph shall be removed upon the expiration
of the six-month lock-up period described in Section 5.1.

                                      -35-
<PAGE>

SECTION 9.        TERMINATION.
                  ------------

         9.1      MUTUAL CONSENT.
                  ---------------

                  S1 and the Purchasers may terminate this Agreement at any time
by mutual written agreement.

         9.2      OTHER TERMINATION.
                  ------------------

                  S1 or the  Purchasers  may terminate  this Agreement by giving
notice (a  "Termination  Notice") to the other parties at the time designated in
this  Section  or, in the  absence  of such  designation,  at any time up to and
including  the date of the First  Closing,  if any one or more of the  following
shall have occurred and be continuing:

                  9.2(a). Termination By Any Party. Any party may terminate this
Agreement under any one or more of the following circumstances:

                           (1) at any time  after  termination  of the  Holdings
Purchase Agreement in accordance with its terms;

                           (2)  a  court  or  other  governmental  authority  of
competent  jurisdiction shall have issued an order, rit, injunction or decree or
shall  have  taken  any  other  action  permanently   restraining  or  otherwise
prohibiting  the  purchase of the Initial  Shares  contemplated  hereby and such
order,  writ,  injunction,  decree or other  action  shall have become final and
nonappealable.

                  9.2(b).  Termination  By the  Purchasers.  The  Purchasers may
terminate this Agreement

                           (1)  on  the  date  of  the  First  Closing,  if  any
condition  precedent  set  forth in  Sections  6.1 or 6.2  shall  not have  been
satisfied;

                           (2) at any time  prior to or on the date of the First
Closing,  if S1 engages in any  transaction  (i) in which S1  proposes to issue,
deliver or sell,  or authorize or propose the  issuance,  delivery or sale of, a
number of shares of voting  capital  stock greater than 50% of its shares of its
outstanding  shares of voting capital stock, (ii) involving or contemplating the
acquisition  or  purchase  of more than 50% of any  class or  series of  capital
stock,  or 50% of the assets of S1, (iii) any lease or sale  transaction  out of
the  ordinary  course of  business of more than 50% of the assets of S1, or (iv)
any  liquidation  or  dissolution  of S1,  without  obtaining  the prior written
consent of the Purchasers  (which consent shall not be  unreasonably  withheld);
and

                           (3)  provided  that  the  Purchasers  are not then in
breach of any  representation,  warranty,  covenant or other agreement contained
herein  that,

                                      -36-
<PAGE>

individually  or in the  aggregate,  would give S1 the right to  terminate  this
Agreement,  if there shall have been a breach of any of the  representations  or
warranties  set  forth  in this  Agreement  on the part of S1,  if such  breach,
individually  or in the  aggregate,  has had or is  likely  to  have a  Material
Adverse  Effect on S1, and such breach  shall not have been cured within 30 days
following receipt by the S1 of written notice of such breach from the Purchasers
or such breach, by its nature, cannot be cured prior to the First Closing

                  9.2(c).  Termination By S1. S1 may terminate this Agreement on
the date of the First Closing,  if any condition precedent set forth in Sections
6.1 or 6.3 shall not have been satisfied.

         9.3      EFFECT OF TERMINATION.
                  ----------------------

                  Termination of this  Agreement  pursuant to this Section shall
not relieve any party of any liability for a default or other breach, default or
nonperformance  under this Agreement.  Notwithstanding  the foregoing,  no party
hereto shall be liable for  consequential or punitive damages in connection with
such termination.

SECTION 10.       MISCELLANEOUS.
                  --------------

         10.1     ADDITIONAL ACTIONS AND DOCUMENTS.
                  ---------------------------------

                  Each of the parties  hereto  agrees that it will, at any time,
prior to, at or after the Third Closing,  take or cause to be taken such further
actions,  and execute,  deliver and file or cause to be executed,  delivered and
filed  such  further   documents  and  instruments   (including  export  license
applications) as may be necessary or reasonably requested in connection with the
consummation of the purchase and sale contemplated by this Agreement or in order
to fully effectuate the purposes, terms and conditions of this Agreement.

         10.2     EXPENSES.
                  ---------

                  Each  party  hereto  shall pay its own  expenses  incurred  in
connection with this Agreement and in the  preparation  for and  consummation of
the transactions contemplated hereby.

         10.3     NOTICES.
                  --------

                  All notices, demands,  requests, or other communications which
may be or are  required  to be given or made by any  party  to any  other  party
pursuant  to this  Agreement  shall be in writing  and shall be hand  delivered,
mailed by first-class

                                      -37-
<PAGE>

registered or certified mail,  return receipt  requested,  postage  prepaid,  or
delivered by overnight air courier, addressed as follows:

                  (i) if to S1:

                  Security First Technologies Corporation
                  3390 Peachtree Road, NE, Suite 1700
                  Atlanta, Georgia  30326
                  Attn.:  President

                  with a copy (which shall not constitute notice) to:

                  Hogan & Hartson L.L.P.
                  555 Thirteenth Street, N.W.
                  Washington, D.C.  20004
                  Attn.:  Stuart G. Stein, Esq.

         and

                  Hogan & Hartson L.L.P.
                  Avenue des Arts 41
                  1040 Brussels, Belgium
                  Attn.:   Claud V. S. Eley, Esq.

                  (b)      if to FICS, to:
                  FICS Group N.V.
                  Excelsiorlaan 87
                  1930 Zaventem, Belgium

                  Attn.:   Steven Sipowicz, Chief Financial Officer

                  with a copy (which shall not constitute notice) to:

                  Brown, Rudnick, Freed & Gesmer
                  Stanmore House
                  29-30 St. James's Street
                  London SW1A 1HB, England
                  Attn.:   Lawrence A. Levy, Esq.
                           Colin Hugh Buckley, Esq.

                  (c)      if  to  any  Purchaser,  to  the  address  set  forth
                           opposite such Purchaser's name on Schedule 1 attached
                           hereto.

                                      -38-
<PAGE>

or such other  address as the  addressee  may indicate by written  notice to the
other parties.  Each notice,  demand,  request,  or communication which shall be
given or made in the manner described above shall be deemed  sufficiently  given
or made for all purposes at such time as it is delivered to the addressee  (with
the return receipt,  the delivery  receipt,  or the affidavit of messenger being
deemed  conclusive but not exclusive  evidence of such delivery) or at such time
as delivery is refused by the addressee upon presentation.

         10.4     WAIVER.
                  -------

                  No waiver by any party of any  failure or refusal of any other
party to comply  with its  obligations  under this  Agreement  shall be deemed a
waiver of any other or subsequent  failure or refusal to so comply by such other
party.  No waiver  shall be valid  unless in  writing  signed by the party to be
charged and only to the extent therein set forth.

         10.5     BINDING EFFECT.
                  ---------------

                  This  Agreement  shall be binding  upon and shall inure to the
benefit of the parties hereto and their respective successors and assigns.

         10.6     ENTIRE AGREEMENT; AMENDMENT.
                  ----------------------------

                  This Agreement,  including the other instruments and documents
referred to herein or delivered  pursuant hereto,  contains the entire agreement
among the parties with respect to the subject  matter hereof and  supersedes all
prior oral or written agreements,  commitments or understandings with respect to
such matters. No amendment, modification or discharge of this Agreement shall be
valid or  binding  unless set forth in writing  and duly  executed  by the party
against whom enforcement of the amendment, modification or discharge is sought.

         10.7     SEVERABILITY.
                  -------------

                  If any  part of any  provision  of  this  Agreement  shall  be
invalid or unenforceable under applicable law, such part shall be ineffective to
the  extent of such  invalidity  or  unenforceability  only,  without in any way
affecting the remaining parts of such provisions or the remaining  provisions of
said Agreement.

         10.8     HEADINGS.
                  ---------

                  The headings of the sections and subsections contained in this
Agreement are inserted for convenience only and do not form a part or affect the
meaning, construction or scope thereof.

                                      -39-
<PAGE>

         10.9     GOVERNING LAW.
                  --------------

                  This  Agreement,  the rights and  obligations  of the  parties
hereto,  and any claims or disputes relating  thereto,  shall be governed by and
construed  under  and in  accordance  with  the laws of the  State of  Delaware,
excluding the choice of law rules thereof.

         10.10    SIGNATURE IN COUNTERPARTS.
                  --------------------------

                  This Agreement may be executed in separate counterparts,  none
of which need  contain the  signatures  of all  parties,  each of which shall be
deemed to be an original, and all of which taken together constitute one and the
same instrument.  It shall not be necessary in making proof of this Agreement to
produce  or  account  for more than the number of  counterparts  containing  the
respective signatures of, or on behalf of, all of the parties hereto.

         10.11    NO THIRD PARTY BENEFICIARIES.
                  -----------------------------

                  Except as expressly  provided  herein,  this Agreement is made
and entered into for the sole protection and benefit of the parties hereto,  and
no other person or entity shall have any right of action hereon,  right to claim
any right or benefit from the terms contained  herein or be deemed a third party
beneficiary hereunder.

         10.12    ASSIGNABILITY.
                  --------------

                  All terms and  provisions of this  Agreement  shall be binding
upon and inure to the  benefit  of the  parties  hereto,  and  their  respective
transferees,  successors  and  assigns;  provided,  however,  that  neither this
Agreement  nor any rights,  privileges,  duties and  obligations  of the parties
hereto may be  assigned  or  delegated  by any party  hereto  without  the prior
written  consent of all the parties to this  Agreement and any such purported or
attempted  assignment shall be null and void ab initio and of no force or effect
provided, further that a Purchaser may assign this Agreement,  including rights,
privileges,  duties and obligations hereunder to any affiliate of such Purchaser
which is wholly or substantially  owned directly or indirectly by such Purchaser
so long as such  assignment  does not in any way  materially  delay or otherwise
materially  adversely  impact the  ability of the  parties  hereto to effect the
transactions contemplated hereby.

                                      -40-
<PAGE>

         10.13    PARTIES NOT PARTNERS.
                  ---------------------

                  Nothing contained in this Agreement shall constitute any party
as a  partner  with,  agent  for or  principal  of any one or more of the  other
parties or their successors and assigns

         10.14    NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES.
                  -----------------------------------------------

                  None  of  the  representations,   warranties,   covenants  and
agreements in this  Agreement or in any  instrument  delivered  pursuant to this
Agreement  shall  survive  the First  Closing,  except for those  covenants  and
agreements  contained  herein and therein which by their terms apply in whole or
in part after the First Closing.

         10.15    CERTAIN DEFINITIONS.
                  --------------------

         References to "$" in this  Agreement are to United States  dollars.  In
addition to any other  definitions  contained in this  Agreement,  the following
words,  terms and phrases  shall have the  following  meanings when used in this
Agreement.

         "Affiliated   Person":   any   director,   officer  or  5%  or  greater
shareholder,  spouse  or  other  person  living  in the same  household  of such
director, officer or shareholder, or any company,  partnership or trust in which
any of the foregoing persons is an officer, 5% or greater  shareholder,  general
partner or 5% or greater trust beneficiary.

         "knowledge":  with  respect to any entity,  refers to the  knowledge of
such entity's  directors and officers in the ordinary  course of their duties in
such positions.

         "Laws": any and all statutes,  laws,  ordinances,  rules,  regulations,
orders, permits,  judgments,  injunctions,  decrees, case law and other rules of
law enacted, promulgated or issued by any Governmental Entity.

         "Material  Adverse  Effect":  with  respect to S1,  means a  condition,
event, change or occurrence that is reasonably likely to have a material adverse
effect upon (A) the  financial  condition,  results of  operations,  business or
properties of the relevant  entity (other than as a result of changes in laws or
regulations  or accounting  rules of general  applicability  or  interpretations
thereof),  or (B) the ability of the relevant  entity to perform its obligations
under, and to consummate the transactions contemplated by, this Agreement.


                            [SIGNATURE PAGE FOLLOWS]


                                      -41-
<PAGE>

                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Agreement to be duly executed and delivered as of the date first above written.

                            SECURITY FIRST TECHNOLOGIES
                            CORPORATION

                             By:   /s/      James S. Mahan III
                                   ------------------------------------
                                   Name:    James S. Mahan III
                                   Title:   Chairman and Chief Executive Officer

<PAGE>

THE PURCHASERS:


/s/ MICHEL AKKERMANS
- --------------------------------------
MICHEL AKKERMANS


PAMICA N.V.


By:   /s/
      --------------------------------
      Name:
      Title:



GENERAL ATLANTIC PARTNERS 20, L.P.
By:  GENERAL ATLANTIC PARTNERS, LLC, its General Partner


      By:  /s/    David C. Hodgson
         -----------------------------
         Name:    David C. Hodgson
         Title:   A Managing Member

GENERAL ATLANTIC PARTNERS 52, L.P.
By:  GENERAL ATLANTIC PARTNERS, LLC, its General Partner

      By:  /s/  David C. Hodgson
         -----------------------------
         Name:  David C. Hodgson
         Title: A Managing Member

GAP COINVESTMENT PARTNERS, L.P.


By:   /s/     David C. Hodgson
      --------------------------------
      Name:   David C. Hodgson
      Title:  A General Partner


<PAGE>

GIMV N.V.



By:   /s/
      --------------------------------
      Name:
      Title:




- --------------------------------------
GUY MOONS



- --------------------------------------
STEVEN VAN ROSSEN



- --------------------------------------
NADINE QUAEYHAEGENS



/s/ ETIENNE CASTIAUX
- --------------------------------------
ETIENNE CASTIAUX



/s/ GOORT GELTEN
- --------------------------------------
GOORT GELTEN



/s/ LOEK VAN DEN BOOG
- --------------------------------------
LOEK VAN DEN BOOG



/s/ FREDRICK DUMAS
- --------------------------------------
FREDRICK DUMAS

<PAGE>

UNICO PORTFOLIO LTD.

By:   /s/
      --------------------------------
      Name:
      Title:

<PAGE>

      FICS GROUP N.V.
      (for the limited purposes set forth herein)

By:   /s/
      --------------------------------
      Name:
      Title:

<PAGE>


                                   Schedule 1
                                   ----------

PURCHASER                                                         PERCENTAGE
- ---------                                                         ----------
Michel Akkermans                                                    43.40
PAMICA N.V.                                                         17.05
General Atlantic Partners 20, L.P.                                  23.99
GAP Coinvestment Partners, L.P.                                      3.41
General Atlantic Partners 52, L.P.                                   .53
GIMV N.V.                                                            6.34
Guy Moons                                                            .27
Steven Van Rossen                                                    .05
Nadine Quaeyhaegens                                                  .14
Etienne Castiaux                                                     .14
Goort Gelten                                                         1.71
Frederick Dumas                                                      .34
Loek van den Boog                                                    .92
UNICO PORTFOLIO Ltd.                                                 1.71
                      TOTAL                                        100.00%


                                                                    EXHIBIT 99.1

WEDNESDAY SEPTEMBER 22, 8:50 AM EASTERN TIME
COMPANY PRESS RELEASE
SOURCE: Security First Technologies

SECURITY FIRST  TECHNOLOGIES  CONFIRMS DEAL AND ANNOUNCES TERMS OF NEW AGREEMENT
TO ACQUIRE FICS GROUP,  N.V.

ATLANTA,  Sept. 22 /PRNewswire/ -- Security First Technologies  (Nasdaq:  SONE -
news),  a premier  provider of  Internet-based  applications  for the  financial
services  industry,  today  announced  terms of a new  agreement to acquire FICS
Group, N.V., a privately held company based in Brussels, Belgium.
                  The  terms  of the  new  agreement  call  for  Security  First
Technologies  to issue 10 million  shares of its common  stock to FICS.  The new
agreement  also enables FICS  stockholders  to receive up to an  additional  4.5
million shares under an "earn-out" if FICS meets certain financial goals through
2002. In addition,  Security First Technologies will exchange  approximately 1.2
million  Security  First  Technologies  options  for the  currently  outstanding
options held by FICS employees and will grant an additional 2.8 million Security
First  Technologies  options  to  FICS  employees.  Based  upon  Security  First
Technologies' closing price of US $35.75 on September 21, 1999, the value of the
FICS transaction is  approximately US $395 million.  If the earn-out targets are
reached,  the value of the transaction,  based upon  yesterday's  Security First
Technologies' stock closing price, would be approximately US $556 million.
                  "FICS' CEO,  Michel  Akkermans,  has a strong  reputation  for
leadership and, along with his seasoned  management team, has established  solid
relationships with the world's leading financial institutions. It is a privilege
to have Michel join Security First  Technologies  as our Chairman of the Board,"
said James S. Mahan III,  Security First  Technologies'  CEO.  "Combining forces
with FICS remains extremely  strategic for us as FICS has an established  global
presence,  blue chip customers,  and synergistic  corporate  banking  expertise.
Together,  we will  continue to execute upon our vision of further  establishing
the  new  company  as the  leading  technology  provider  and  innovator  in the
Internet-based financial services market worldwide."
                  Security  First  Technologies  is committed to combining  with
FICS to fulfill  several  strategic  initiatives.  FICS  offers  Security  First
Technologies:
    * A global distribution network with sales forces in 11 countries
    * A strong development team  with a firm understanding  of technologies  not
      yet adopted in the U.S.
    * A  deep   understanding   of  banking   payment  systems  and   regulatory
      requirements in 26 countries

<PAGE>

    *  Established  relationships with many major financial  institutions around
       the  world,  which  can be  leveraged  to  cross-sell  Virtual  Financial
       Manager(TM) (VFM)

                  "I am extremely pleased that we have reached an agreement that
will enable FICS to join forces with Security  First  Technologies  and Edify to
become the leading provider of Internet-based financial services applications in
the world," said Michel Akkermans, FICS' founder, CEO and Chairman of the Board.
"The new value of the  transaction  is the result of the changed market price of
Security  First  Technologies  stocks  and a  reduction  in the number of shares
issued to FICS. In addition, FICS employees gain significantly from the new deal
in that the number of stock options they will receive is more than  doubled.  We
are  confident  that the new deal  places the new S1  Corporation  in a stronger
position for  executing  its long-term  global  strategy.  I am also proud to be
named  Chairman of the new S1  Corporation,  where I will help  oversee the most
dedicated and  experienced  technical  professionals  available to the financial
services industry."

Terms of the Agreement
                  As  announced  previously,   a  Security  First  Technologies'
Belgian  subsidiary  will acquire FICS. The corporate  headquarters  for the new
company will be in Atlanta,  Georgia,  with Brussels,  Belgium acting as a major
operational  and  development   center.   Mr.  Mahan,   CEO  of  Security  First
Technologies,  will  serve as CEO of S1  Corporation.  Michel  Akkermans,  FICS'
founder, CEO and Chairman of the Board, will serve as S1 Corporation's  Chairman
of the Board.
    *  The FICS  stockholders  will receive 10 million  shares of Security First
       Technologies common stock.
    *  The  FICS  stockholders  will  have  the  opportunity  to  earn  up to an
       additional  4.5 million  shares of Security  First  Technologies'  common
       stock  between  now and the end of 2001 if certain  operating  units meet
       revenue targets of $89 million for 2000 and $123 million for 2001.
    *  FICS  stockholders  can earn up to one half of the  additional  shares by
       making sales to a group of specifically identified large customers.
    *  Holders of options to purchase FICS stock will receive  1,168,082 options
       to purchase Security First Technologies' common stock, and Security First
       Technologies  will  grant FICS  employees  2,831,918  million  additional
       options at market price, for a total of 4 million options.
                  The  transaction,  which will be  accounted  for on a purchase
accounting  basis,  is expected to close in the fourth  quarter of 1999. The new
terms  of  this   transaction  are  subject  to  Security  First   Technologies'
shareholder  approval.  Also on May 17, 1999, Security First Technologies agreed
to acquire Edify Corporation (Nasdaq:  EDFY - news) of Santa Clara,  California.
This agreement is progressing according to plan and is also expected to close in
the fourth  quarter of 1999.  Today's  announcement  will enable  Security First
Technologies  to continue to execute upon its vision of combining  with FICS and
Edify in a new  organization  called S1  Corporation  that  will be the  leading
strategic  enterprise  technology

<PAGE>

provider  and  innovator  in  the  rapidly  evolving  market  of  Internet-based
financial services worldwide.
                  Collectively, the new organization will deliver a complete set
of solutions  for all lines of business,  from consumer  banking,  brokerage and
insurance  applications  to small  business and  corporate  banking  products to
financial  reporting  solutions.  These  applications  can be  delivered  across
multiple  access  devices  and  channels,   such  as  Internet,   wireless,  and
interactive  voice  response  (IVR).  The new  organization  will have strategic
relationships with more than 35 of the top 100 financial institutions worldwide.

About Security First Technologies
                  Security  First  Technologies  builds,  delivers  and operates
integrated,  transactional  and brandable  Internet  applications  for financial
institutions.  Security First  Technologies'  secure solutions are available for
in-house implementations or can be outsourced to the Security First Technologies
Data  Center.   Security  First  Technologies  also  offers  training,   product
integration   and  customer   service   center   outsourcing.   Security   First
Technologies,  through  direct  sales and  channel  partnerships,  has agreed to
provide  software  applications  and  technology  to  more  than  100  financial
entities. Security First Technologies can be reached at www.S1.com.

About FICS
                  FICS enriches the enterprise-wide solution set to be delivered
by the new  organization  in several key areas:  corporate  electronic  banking,
Java-based  Internet  banking and central  bank  reporting  software.  FICS also
brings expertise in smart card development and wireless technology. In addition,
the company's  worldwide presence gives the new entity an immediate  operational
presence in 11 countries and a customer base in 26 countries.
                  FICS was founded in 1989 by Michel Akkermans,  current CEO and
Chairman.  FICS has  since  grown  exponentially  to become  one of the  world's
leading software  companies in the field of regulatory  financial  reporting and
remote  electronic  banking.  FICS today  employs more than 650 people across 12
locations  in  10  countries:   Australia,   Belgium   (headquarters),   France,
Luxembourg,  Portugal, the Netherlands, Spain, the United Kingdom and the United
States. FICS' web site is at www.ficsgrp.com

Forward-looking statements
                  Statements  in this news release  concerning  future  results,
performance,  expectations or intentions are forward-looking statements.  Actual
results,  performance or developments may differ materially from forward-looking
statements  as a result  of known or  unknown  risks,  uncertainties  and  other
factors, including those identified in the Company's filings with the Securities
and Exchange Commission, press releases and other public communications.

SOURCE: Security First Technologies



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