HARBINGER CORP
10-Q, 1999-08-16
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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<PAGE>   1
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-Q

[MARK ONE]
     [X]           QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                             SECURITIES EXCHANGE ACT OF 1934

                      FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1999

                                           OR

     [ ]          TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                             SECURITIES EXCHANGE ACT OF 1934

           FOR THE TRANSITION PERIOD FROM ____________ TO ____________

                         COMMISSION FILE NUMBER 0-26298

                              HARBINGER CORPORATION
             (Exact name of registrant as specified in its charter)


<TABLE>
<S>                                                                <C>
                    GEORGIA                                                     58-1817306
(State or other Jurisdiction of incorporation or                   (I.R.S. Employer Identification No.)
                 organization)

           1277 LENOX PARK BOULEVARD                                              30319
                ATLANTA, GEORGIA                                                (Zip Code)
    (Address of principal executive offices)
</TABLE>

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (404) 467-3000

Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports) and (2) has been subject to such filing
requirements for the past 90 days. Yes [X] No [ ]

The number of shares of the issuer's class of capital stock outstanding as of
August 12, 1999, the latest practicable date, is as follows: 38,539,253 shares
of Common Stock, $.0001 par value.


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



<PAGE>   2


                              HARBINGER CORPORATION
                                    FORM 10-Q
                           QUARTER ENDED JUNE 30, 1999


                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                    Page
                                                                                                   Number
                                                                                                   ------
<S>      <C>                                                                                       <C>
PART I.  FINANCIAL INFORMATION

Item 1.  Financial Statements

           Consolidated Balance Sheets - (Unaudited) June 30, 1999
                and December 31, 1998.....................................................

           Consolidated Statements of Operations (Unaudited) - Three
               Months and Six Months Ended June 30, 1999 and 1998.........................

           Consolidated Statements of Comprehensive Income (Loss) (Unaudited) -
               Three Months and Six Months Ended June 30, 1999 and 1998...................

           Condensed Consolidated Statements of Cash Flows (Unaudited) -
               Six Months Ended June 30, 1999 and 1998....................................

           Notes to Consolidated Financial Statements (Unaudited).........................


Item 2.  Management's Discussion and Analysis of Financial Condition and
               Results of Operations......................................................


PART II. OTHER INFORMATION

Item 4.  Submission of Matters to a Vote of Security Holders..............................

Item 6.  Exhibits.........................................................................


SIGNATURES................................................................................
</TABLE>


<PAGE>   3


PART I.  FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

                              HARBINGER CORPORATION
                           CONSOLIDATED BALANCE SHEETS
                                   (UNAUDITED)
                        (IN THOUSANDS, EXCEPT SHARE DATA)

<TABLE>
<CAPTION>
                                                                         June 30,      December 31,
                                                                           1999            1998
                                                                        ---------       ---------
<S>                                                                     <C>             <C>
                                     ASSETS
Current assets:
   Cash and cash equivalents .....................................      $  30,203       $  33,059
   Short-term investments ........................................         38,085          59,248
   Accounts receivable, less allowances for returns and
     doubtful accounts of $4,943 at June 30, 1999
     and $5,464 at December 31, 1998 .............................         42,218          35,891
   Royalties receivable, less allowance for doubtful accounts
     of $502 at June 30, 1999 and $3,614 at December 31, 1998 ....            316           1,730
   Deferred income taxes .........................................          2,103           2,103
   Other current assets ..........................................          4,724           5,622
                                                                        ---------       ---------
       Total current assets ......................................        117,649         137,653
                                                                        ---------       ---------
   Property and equipment, less accumulated depreciation
     and amortization ............................................         26,485          23,150
   Intangible assets, less accumulated amortization ..............         14,521          16,803
   Deferred income taxes .........................................            698             698
   Other assets ..................................................          1,459              65
                                                                        ---------       ---------
                                                                          160,812       $ 178,369
                                                                        =========       =========
                      LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
   Accounts payable ..............................................      $   4,833       $   5,566
   Accrued expenses ..............................................         23,304          31,571
   Deferred revenues .............................................         21,641          21,213
                                                                        ---------       ---------
       Total current liabilities .................................         49,778          58,350
                                                                        ---------       ---------

Commitments and contingencies

Redeemable preferred stock:
   Zero coupon redeemable preferred stock, no par value; 0 and
     2,000,000 shares authorized, issued and outstanding at
     June 30, 1999 and December 31, 1998 .........................             --              --

Shareholders' equity:
   Preferred stock, no par value; 20,000,000 and 18,000,000
     shares authorized at June 30, 1999 and December 31, 1998;
     none issued or outstanding ..................................             --              --
   Common stock, $0.0001 par value; 100,000,000 shares authorized,
     42,709,577 shares and 42,313,031 shares issued
     as of June 30, 1999 and December 31, 1998 ...................              4               4
   Additional paid-in capital ....................................        203,178         201,615
   Accumulated deficit ...........................................        (65,911)        (73,528)
   Accumulated other comprehensive loss ..........................         (1,364)           (622)
   Treasury stock, 4,323,050 shares as of June 30, 1999 and
         1,562,100 shares as of December 31, 1998 ................        (24,873)         (7,450)
                                                                        ---------       ---------
              Total shareholders' equity .........................        111,034         120,019
                                                                        ---------       ---------
                                                                        $ 160,812       $ 178,369
                                                                        =========       =========
</TABLE>

          See accompanying notes to consolidated financial statements.


<PAGE>   4



                              HARBINGER CORPORATION
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                Three Months Ended June 30,      Six Months Ended June 30,
                                                                ---------------------------      -------------------------
                                                                    1999          1998                1999         1998
                                                                   -------      -------             -------      -------
<S>                                                                <C>          <C>                 <C>          <C>
Revenues:
    Services ................................................      $26,435      $21,892             $51,806      $41,741
    Software ................................................       12,291       11,286              20,423       21,489
                                                                   -------      -------             -------      -------
      Total revenues ........................................       38,726       33,178              72,229       63,230
                                                                   -------      -------             -------      -------
Direct costs:
    Services ................................................       11,621        8,081              22,247       15,113
    Software ................................................        1,356          897               2,487        1,669
                                                                   -------      -------             -------      -------
      Total direct costs ....................................       12,977        8,978              24,734       16,782
                                                                   -------      -------             -------      -------
         Gross margin .......................................       25,749       24,200              47,495       46,448
                                                                   -------      -------             -------      -------

Operating costs:
    Selling and marketing ...................................        9,311        7,552              17,494       14,164
    General and administrative ..............................        6,707        6,054              13,267       11,553
    Depreciation and amortization ...........................        2,182        1,920               4,415        3,795
    Product development .....................................        2,778        2,325               5,993        4,843
    Charge for purchased in-process product development,
      write-off of software development costs, restructuring,
      acquisition related and other charges .................           --        5,010                  --       13,049
                                                                   -------      -------             -------      -------
         Total operating costs ..............................       20,978       22,861              41,169       47,404
                                                                   -------      -------             -------      -------
             Operating income (loss) ........................        4,771        1,339               6,326         (956)
Interest income, net ........................................          760        1,266               1,658        2,577

Income from continuing operations before income taxes........        5,531        2,605               7,984        1,621
Income tax expense ..........................................          254            9                 367          145
                                                                   -------      -------             -------      -------
      Income from continuing operations .....................        5,277        2,596               7,617        1,476
Loss from discontinued operations ...........................           --          637                  --          854
                                                                   -------      -------             -------      -------
      Net income applicable to common shareholders ..........      $ 5,277      $ 1,959             $ 7,617      $   622
                                                                   =======      =======             =======      =======
Basic earnings per common share:
    Income from continuing operations .......................      $  0.14      $  0.06             $  0.19      $  0.03
    Loss from discontinued operations .......................           --        (0.01)                 --        (0.02)
                                                                   -------      -------             -------      -------
      Net income per common share ...........................      $  0.14      $  0.05             $  0.19      $  0.01
                                                                   =======      =======             =======      =======
Weighted average number of common shares outstanding ........       38,294       41,853              39,082       41,451
                                                                   =======      =======             =======      =======

Earnings per common share assuming dilution:
    Income from continuing operations .......................      $  0.13      $  0.05             $  0.19      $  0.03
    Loss from discontinued operations .......................           --        (0.01)                 --        (0.02)
                                                                   -------      -------             -------      -------
      Net income per common share ...........................      $  0.13      $  0.04             $  0.19      $  0.01
                                                                   =======      =======             =======      =======
Weighted average number of common shares outstanding assuming
    dilution ................................................       39,681       44,480              41,046       44,103
                                                                   =======      =======             =======      =======
</TABLE>


          See accompanying notes to consolidated financial statements.


<PAGE>   5


                              HARBINGER CORPORATION
             CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
                                   (UNAUDITED)
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                   Three Months Ended          Six Months Ended
                                                         June 30,                  June 30,
                                                  ---------------------       -------------------
                                                   1999          1998          1999         1998
                                                  -------       -------       -------       -----
<S>                                               <C>           <C>           <C>           <C>
Net income applicable to common shareholders      $ 5,277       $ 1,959       $ 7,617       $ 622
Other comprehensive loss, net of tax:
    Foreign currency translation adjustments         (107)         (286)         (742)       (491)
                                                  -------       -------       -------       -----
      Comprehensive income (loss) ..........      $ 5,170       $ 1,673       $ 6,875       $(131)
                                                  =======       =======       =======       =====
</TABLE>


          See accompanying notes to consolidated financial statements.


<PAGE>   6


                              HARBINGER CORPORATION
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                Six Months Ended
                                                                                    June 30,
                                                                             -----------------------
                                                                               1999           1998
                                                                             --------       --------
<S>                                                                          <C>            <C>
Cash flows provided by operating activities ...........................      $    219       $  2,665
                                                                             --------       --------

Cash flows from investing activities:
    Net (purchases) redemptions of short-term investments .............        21,163         (5,220)
    Purchases of property and equipment ...............................        (6,786)        (6,725)
    Additions to software development costs ...........................        (1,793)        (2,042)
    Proceeds from sale of discontinued operations .....................           500             --
                                                                             --------       --------
      Net cash provided by (used in) investing activities .............        13,084        (13,987)
                                                                             --------       --------

Cash flows from financing activities:
    Exercise of stock options and warrants and issuance of stock under
      employee stock purchase plan ....................................         1,563          9,373
    Principal payments under notes payable and long-term debt .........            --           (418)
    Purchases of common stock .........................................       (17,422)            --
                                                                             --------       --------
      Net cash provided by (used in) financing activities .............       (15,859)         8,955
                                                                             --------       --------
Net decrease in cash and cash equivalents .............................        (2,556)        (2,367)
Cash and cash equivalents at beginning of period ......................        33,059         69,811
Effect of exchange rates on cash held in foreign currencies ...........          (300)           (19)
Cash received from acquisitions .......................................            --             52
                                                                             --------       --------
Cash and cash equivalents at end of period ............................      $ 30,203       $ 67,477
                                                                             ========       ========


Supplemental disclosures:
Cash paid for interest ................................................      $     --       $     50
                                                                             ========       ========
Cash paid for income taxes ............................................      $    125       $    463
                                                                             ========       ========

Supplemental disclosures of noncash investing and financing activities:
Note receivable received in sale of discontinued operations ...........      $    800       $     --
                                                                             ========       ========
</TABLE>


         See accompanying notes to consolidated financial statements.


<PAGE>   7


                              HARBINGER CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  JUNE 30, 1999
                                   (UNAUDITED)


1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         BASIS OF PRESENTATION

         The accompanying unaudited consolidated financial statements have been
prepared in accordance with generally accepted accounting principles for interim
financial information and with the instructions to Form 10-Q. Accordingly, they
do not include all of the information and footnotes required by generally
accepted accounting principles for complete financial statements. The financial
information included herein is unaudited. However, the information reflects all
adjustments (consisting solely of normal recurring adjustments) that are, in the
opinion of management, necessary to a fair presentation of the financial
position, results of operations, comprehensive income (loss) and cash flows for
the interim periods. Operating results for the three months and six months ended
June 30, 1999 are not necessarily indicative of the results that may be expected
for the year ended December 31, 1999. For further information, refer to the
financial statements and footnotes thereto included in Harbinger Corporation's
("Harbinger" or the "Company") Form 10-K for the year ended December 31, 1998
and the Company's current report on Form 8-K dated April 2, 1999.

         RECLASSIFICATIONS

         Certain reclassifications have been made to the 1998 consolidated
financial statements to conform with the 1999 presentation.

2.       DISTRIBUTION AGREEMENT

         During the second quarter of 1999 the Company executed an agreement
("Agreement") with a former distributor. The Agreement requires the distributor
to pay the Company a total of approximately $2.0 million in defined installments
through August 30, 1999 in settlement of certain royalty receivables,
maintenance services provided to the distributor's customers from 1995 through
1999 and an additional license of source code to the distributor. The Company is
recognizing the value of the settlement on a cash basis due to the historical
uncertainty associated with the collection of receivables from this distributor.
The settlement proceeds are being allocated pro-rata to the three components of
the Agreement based on their relative fair values. The following credits were
recorded to the Company's unaudited consolidated statement of operations for the
$1.0 million received under the Agreement in the second quarter of 1999:
$502,000 to general and administrative costs for collection of bad debts,
$314,000 to direct costs of services for reimbursement of maintenance costs and
$210,000 to software revenue for license of source code.

         The Company had fully reserved all royalty receivables associated with
this distributor on September 30, 1998. At June 30, 1999 the Company wrote off
$1.9 million in royalty receivables from this distributor to the allowance for
doubtful accounts as a result of the Agreement. Balances of $502,000 in royalty
receivables and $502,000 in the allowance for doubtful accounts remain on the
Company's unaudited consolidated balance sheet at June 30, 1999.

         In 1995 the Company issued to the distributor 4,000,000 shares of zero
coupon redeemable preferred stock, of which 2,000,000 shares were outstanding at
December 31, 1998. These shares have been cancelled in conjunction with the
termination of the original distributor agreement.


<PAGE>   8

3.       SHAREHOLDERS' EQUITY

         On March 22, 1999 the Board of Directors approved the purchase of an
additional 10% of the Company's outstanding shares of common stock under its
existing stock repurchase program. This is in addition to the 10% repurchase
authorized on October 2, 1998 and completed on March 19, 1999.

4.       CHARGE FOR PURCHASED IN-PROCESS PRODUCT DEVELOPMENT, WRITE-OFF OF
         SOFTWARE DEVELOPMENT COSTS, RESTRUCTURING, ACQUISITION RELATED AND
         OTHER CHARGES

         For the six months ended June 30, 1999, the Company did not incur
charges for purchased in-process product development, write-off of software
development costs, restructuring, acquisition related and other charges
("Charges"). A summary of the Charges incurred in 1998 is as follows (in
thousands):

<TABLE>
<CAPTION>
                                              Three Months Ended     Six Months Ended
                                                 June 30, 1998         June 30, 1998
                                              ------------------     ----------------
                  <S>                         <C>                    <C>
                  Integration costs                 $ 4,645               $11,025
                  Transaction charges                   250                   638
                  Asset write downs                     115                   266
                  Severance costs                        --                 1,120
                                                    -------               -------
                                                    $ 5,010               $13,049
                                                    =======               =======
</TABLE>


         Approximately $1.7 million and $3.7 million of the Charges incurred in
the three months and six months ended June 30, 1998, respectively, resulted from
the redirection of internal resources and their associated costs ("Integration
Activity Costs") to manage integration activities. In 1999 the management of
these activities has been completed and these internal resources and their
associated costs are therefore recorded to their original operating cost
categories.

         At June 30, 1999 the accrued liabilities related to the Charges were
approximately $4.5 million, compared to approximately $7.5 million at December
31, 1998, consisting primarily of reserves for lease terminations, severance
costs, professional fees and payments in connection with phased-out products and
for continued service obligations on them. Certain Charges involve management
estimates, including lease termination costs and liabilities and obligations
associated with phasing out products. Actual results could vary from these
estimates.

5.       INCOME TAXES

         The Company reduced its valuation allowance in the quarter-ended March
31, 1999 by $844,000. This relates to the reduction in the gross deferred income
tax assets that are realized through reversals of existing deductible temporary
differences. The Company continually reviews the adequacy of the valuation
allowance and recognizes these benefits as reassessment indicates it is more
likely than not that the benefits will be realized.

6.       DISCONTINUED OPERATIONS

         The Company discontinued its TrustLink Procurement business ("TLP") on
September 30, 1998 and established a $6.4 million reserve for the estimated loss
on disposal of TLP, including anticipated losses during the phase-out period.

         In the second quarter of 1999 the Company sold the intangible assets
and certain property and equipment of TLP for $1.3 million, comprised of cash of
$500,000 and a note receivable of $800,000. The resulting loss on disposal of
TLP was $2.0 million. The operating loss incurred for TLP for the quarter ended
June 30, 1999 was


<PAGE>   9


$140,000, bringing the total operating losses from the measurement date to June
30, 1999 to $1.2 million. Repayment on the note will occur at the earlier of the
buyer achieving certain sales targets or December 31, 2000.

         At June 30, 1999 the remaining balance in the loss reserve was $3.2
million, available for certain contingencies associated with the disposal of
TLP. Such contingencies primarily relate to lease termination costs, customer
transition issues and collection risks associated with notes and accounts
receivable.

The assets and liabilities of TLP are included in the Company's consolidated
balance sheets as follows (in thousands):

<TABLE>
<CAPTION>
                                                  June 30,            December 31,
                                                    1999                   1998
                                                  --------            ------------
         <S>                                      <C>                 <C>
         Accounts receivable                       $ 272                $   454
         Other current assets                         62                    106
         Property and equipment, net                  --
                                                                            766
         Intangible assets, net                       --                  2,454
         Deferred revenues                            --
                                                                            (45)
         Current liabilities                        (110)                  (281)
                                                   -----                -------
                  Net assets                       $ 224                $ 3,454
                                                   =====                =======
</TABLE>


         The Company discontinued its TrustedLink Banker division ("Banker") on
December 31, 1997 and established a $4.0 million reserve for the estimated loss
on disposal of Banker, including anticipated losses during the phase-out period.
The disposal and operations of Banker were substantially completed by December
31, 1998. As of June 30, 1999 the reserve had a balance of $1.4 million for
certain remaining contingencies associated with the disposal of Banker.

7.       RELATED PARTY TRANSACTIONS

         The Company received notes receivable during the first quarter of 1999
of $605,000 from five employees who are the former shareholders of EDI Works!
LLC., a company which was acquired in 1998 and accounted for as an immaterial
pooling of interests. The terms of the notes are 18 months with an annual
interest rate of 8.75%. Interest accrues on a monthly basis with principal and
interest due at the end of the term of the notes.

8.       SEGMENT INFORMATION

         The Company operates in a single industry segment: the development,
marketing and support of software products and the provision of network and
consulting services to enable businesses to engage in E-Commerce. The Company
manages its business along geographical lines, thus resulting in three
reportable segments: North America, Europe, and Asia Pacific and Latin America.
The accounting policies of each segment are the same as those described in the
summary of significant accounting policies. Revenues are attributed to a
reportable segment based on the location of the customer. Management evaluates
the performance of each segment on the basis of operating income, excluding
integration and restructuring charges and certain general and administrative
credits. Intersegment royalties are calculated based upon revenues, as defined,
derived from the sales of certain software products and services at agreed upon
percentages between the segments.

         A summary of the Company's reportable segments for the six months ended
June 30, 1999 and June 30, 1998 is presented below (in thousands):


<PAGE>   10


<TABLE>
<CAPTION>
                                                                     Asia Pacific
                                     North America       Europe   and Latin America        Total
                                     -------------       ------   -----------------        -----
<S>                                  <C>                <C>       <C>                     <C>
Revenues:
     1999                               $61,979         $10,881         $1,533            $74,393
     1998                               $53,748         $10,265         $1,150            $65,163
Intersegment Royalties:
     1999                               $ 2,164         $    --         $   --            $ 2,164
     1998                               $ 1,933         $    --         $   --            $ 1,933
Operating Income (as defined):
     1999                               $ 3,642         $ 1,120         $  312            $ 5,074
     1998                               $11,510         $   361         $  222            $12,093
</TABLE>

<TABLE>
<CAPTION>
                                                      1999           1998
                                                    --------       --------
<S>                                                 <C>            <C>
Revenues:
Total gross revenues for reportable segments        $ 74,393       $ 65,163
Elimination of intersegment royalties                 (2,164)        (1,933)
                                                    --------       --------
   Total consolidated revenues                      $ 72,229       $ 63,230
                                                    ========       ========

<CAPTION>
                                                      1999           1998
                                                    --------       --------
<S>                                                 <C>            <C>
Operating Income (as defined):
Total operating income for reportable segments      $  5,074       $ 12,093
Charges for integration and restructuring                 --        (13,049)
Certain general and administrative credits             1,252             --
                                                    --------       --------
   Total consolidated operating income (loss)       $  6,326       $   (956)
                                                    ========       ========
</TABLE>


A summary of the Company's reportable segments for the quarters ended June 30,
1999 and June 30, 1998 is presented below (in thousands):

<TABLE>
<CAPTION>
                                                                                            Asia Pacific
                                                       North America         Europe       and Latin America       Total
                                                       -------------         ------       -----------------       -----
<S>                                                    <C>                   <C>          <C>                    <C>
Revenues:
     1999                                                 $33,566            $5,152            $1,022            $39,740
     1998                                                 $28,437            $5,169            $  752            $34,358
Intersegment Royalties:
     1999                                                 $ 1,014            $   --            $   --            $ 1,014
     1998                                                 $ 1,180            $   --            $   --            $ 1,180
Operating Income (as defined):
     1999                                                 $ 3,589            $  287            $  393            $ 4,269
     1998                                                 $ 6,129            $  130            $   90            $ 6,349
</TABLE>



<PAGE>   11


<TABLE>
<CAPTION>
                                                      1999           1998
                                                    --------       --------
<S>                                                 <C>            <C>
Revenues:
Total gross revenues for reportable segments        $ 39,740       $ 34,358
Elimination of intersegment royalties                 (1,014)        (1,180)
                                                    --------       --------
   Total consolidated revenues                      $ 38,726       $ 33,178
                                                    ========       ========

<CAPTION>
                                                      1999           1998
                                                    --------       --------
<S>                                                 <C>            <C>
Operating Income (as defined):
Total operating income for reportable segments      $  4,269       $  6,349
Charges for integration and restructuring                 --         (5,010)
Certain general and administrative credits               502             --
                                                    --------       --------
   Total consolidated operating income              $  4,771       $  1,339
                                                    ========       ========
</TABLE>

9.       CONTINGENCIES

         The Company is involved in certain legal actions and other claims
arising out of the ordinary course of business, including discontinued
operations and the phase-out of certain non-strategic software products. While
the ultimate results and outcomes cannot be determined, management does not
expect that they will have a material adverse effect on the Company's results of
operations or financial position.




ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
         RESULTS OF OPERATIONS

         The following discussion and analysis should be read in conjunction
with the consolidated financial statements and notes thereto included elsewhere
herein and the Company's Form 10-K for the year ended December 31, 1998 and the
Company's current report on Form 8-K dated April 2, 1999.

OVERVIEW

         Harbinger Corporation (the "Company") generates revenues from various
sources, including revenues for services, license fees and royalties for
software. Revenues for services principally include subscription fees for
transactions on HARBINGER.NET, the Company's electronic commerce portal;
software maintenance, and professional service fees for implementation,
outsourcing, and training services. Subscription fees are based on a combination
of monthly access charges and transaction-based usage charges and are recognized
based on actual charges incurred each month. Software maintenance and
implementation revenues represent recurring charges to customers and are
deferred and recognized ratably over the service period. Revenues for
professional services are based on actual services rendered and are recognized
as services are performed. License fees for software are generally recognized
upon shipment, net of estimated returns. Software revenues also include royalty
revenues under distribution agreements with third parties which are recognized
either on shipment of software to a distributor or upon sales to end users by a
distributor, depending on the terms of the distribution agreement.

RESULTS OF OPERATIONS

    REVENUES

         Total revenues increased 14% to $72.2 million in the six months ended
June 30, 1999 from $63.2 million in the same period in 1998. Revenues for
services increased 24% to $51.8 million in the six months ended June 30, 1999
from $41.7 million in the same period in 1998. This increase is primarily
attributable to growth in the


<PAGE>   12


Company's outsourcing and implementation services, as well as growth in
subscription fees for HARBINGER.NET. Revenue from software sales decreased 5% to
$20.4 million in the six months ended June 30, 1999 from $21.5 million in the
same period in 1998 due to the phase-out of certain non-strategic software
products ("Sunset Products") and the discontinued relationships with certain
third party resellers of the Company's software products.

         Total revenues increased 17% to $38.7 million in the three months ended
June 30, 1999 from $33.2 million in the same period in 1998. Revenues for
services increased 21% to $26.4 million in the three months ended June 30, 1999
from $21.9 million in the same period in 1998. This increase is primarily
attributable to growth in the Company's outsourcing and implementation services
as well as subscription fees for HARBINGER.NET. Revenues from software license
fees increased 9% to $12.3 million in the three months ended June 30, 1999 from
$11.3 million in the same period in 1998 primarily as a result of growth in
core, non-discontinued software products and migration of existing DOS-based
customers to IP-based desktop products.

    DIRECT COSTS

         Direct costs for services increased to $22.2 million, or 42.9% of
services revenues, in the six months ended June 30, 1999, from $15.1 million, or
36.2% of services revenues, in the six months ended June 30, 1998. The increase
in direct costs for services as a percentage of total services revenues
primarily reflects the effects of a higher mix of professional services revenues
in 1999 and the effect of reallocating costs to Integration Activity Costs in
1998. Direct costs for software increased to $2.5 million, or 12.2% of software
revenues, in the six months ended June 30, 1999, from $1.7 million, or 7.8% of
software revenues, in the six months ended June 30, 1998. The increase in direct
software costs as a percentage of software revenues is primarily due to
increased amortization of capitalized software costs and the decline in software
revenues from Sunset Products.

         Direct costs for services increased to $11.6 million, or 44% of
services revenue, in the three months ended June 30, 1999, from $8.1 million, or
36.9% of services revenue, in the three months ended June 30, 1998. The increase
in direct costs for services as a percentage of services revenues reflects the
effects of a higher mix of professional services revenues in 1999, principally
through increased outsourcing and implementation activities, as well as the
effect of reallocating costs to Integration Activity Costs during the three
months ended June 30, 1998. Direct costs for software increased to $1.4 million,
or 11% of software revenues, in the three months ended June 30, 1999, from
$897,000, or 8.0% of software revenues, in the three months ended June 30, 1998.
The increase in direct software costs as a percentage of software revenues is
primarily attributable to increased amortization of capitalized software.

    SELLING AND MARKETING

         Selling and marketing expenses increased 24% to $17.5 million, or 24.2%
of revenues, in the six months ended June 30, 1999 from $14.2 million, or 22.4%
of revenues, in the six months ended June 30, 1998. For the second quarters,
selling and marketing expenses increased 23% to $9.3 million, or 24% of
revenues, in the three months ended June 30, 1999, from $7.6 million, or 22.8%
of revenues, in the three months ended June 30, 1998. For both the six-month and
three-month period comparisons, the increase in expenses is primarily due to
development and positioning of the Company's E-Commerce portal HARBINGER.NEt and
the effect of reallocating costs to Integration Activity Costs in 1998.

    GENERAL AND ADMINISTRATIVE

         General and administrative expenses increased 15% to $13.3 million in
the six months ended June 30, 1999, from $11.6 million in the six months ended
June 30, 1998. As a percentage of revenues, these expenses remained relatively
level at about 18.4% of revenues in the six months ended June 30, 1999 from
18.3% of revenues in the six months ended June 30, 1998. The 1999 period
includes a credit of $1.2 million due to the


<PAGE>   13


receipt of an outstanding royalty receivable from a specific customer that had
been written off in 1998. If this receipt had not occurred, general and
administrative expense would have been $14.5 million or 20.1% of revenues.
Excluding the aforementioned bad debt recovery, the increase in general and
administrative expense as a percentage of revenue is primarily attributable to
the effect of reallocating costs to Integration Activity Costs in 1998, an
increase in office space to accommodate expansion, and infrastructure investment
activities, principally in the information technology area, in 1999.

         For the second quarters, general and administrative expenses increased
11% to $6.7 million in the three months ended June 30, 1999 from $6.1 million in
the three months ended June 30, 1998. As a percentage of revenues, these
expenses decreased to 17.3% of revenues in the three months ended June 30, 1999
from 18.2% of revenues in the three months ended June 30, 1998. The quarter
ended June 30, 1999 includes a credit of $502,000 due to the receipt of an
outstanding royalty receivable from a specific customer that had been written
off in 1998. If this receipt had not occurred, general and administrative
expense would have been $7.2 million or 18.6% of revenues. This increase as a
percentage of revenues is attributed to the effect of reallocating costs to
Integration Activity Costs in 1998 as well as an increase in infrastructure
investments in 1999.

    DEPRECIATION AND AMORTIZATION

         Depreciation and amortization increased 16% to $4.4 million in the six
months ended June 30, 1999 from $3.8 million in the six months ended June 30,
1998. As a percentage of revenues, these expenses increased to 6.1% of revenues
in the six months ended June 30, 1999 from 6.0% revenues in the six months ended
June 30, 1998. For the second quarters, depreciation and amortization increased
14% to $2.2 million in the three months ended June 30, 1999 from $1.9 million in
the three months ended June 30, 1998. As a percentage of revenues, these
expenses were 5.6% and 5.8% for the three months ended June 30, 1999 and June
30, 1998, respectively. The increase in depreciation and amortization for the
six-month and three-month periods of 1999 compared to 1998, respectively, is due
to the purchase of computer hardware and software associated with the Company's
continuing investment in its information technology infrastructure.


    PRODUCT DEVELOPMENT

         Total expenditures for product development, including capitalized
software development costs, increased to $7.8 million in the six months ended
June 30, 1999 from $6.9 million in the same period in 1998. The Company
capitalized product development costs of $1.8 million and $2.0 million in the
six months ended June 30, 1999 and 1998, respectively, which represented 23.0%
and 29.4% of total expenditures for product development in these respective
periods. As a percentage of total revenues, product development expenses
increased to $6.0 million, or 8.3% of revenues, in the six months ended June 30,
1999, from $4.8 million, or 7.7% of revenues, in the six months ended June 30,
1998, reflecting increased development of internet-based products and the effect
of reallocating costs to Integration Activity Costs in 1998.

         Total expenditures for product development, including capitalized
software development costs, increased to $3.7 million in the three months ended
June 30, 1999 from $3.5 million in the same period in 1998. The Company
capitalized software development costs of $0.9 million and $1.2 million in the
three months ended June 30, 1999 and 1998, respectively, which represented 24.6%
and 33.1% of total expenditures for product development in these respective
periods. As a percentage of total revenues, product development expenses were
$2.8 million, or 7.2% of revenues, in the three months ended June 30, 1999, and
$2.3 million, or 7.0% of revenues, in the three months ended June 30, 1998,
reflecting increased development of internet-based products and the effect of
reallocating cost to Integration Activity Costs in 1998.

CHARGE FOR PURCHASED IN-PROCESS PRODUCT DEVELOPMENT, WRITE-OFF OF SOFTWARE
DEVELOPMENT COSTS, RESTRUCTURING, ACQUISITION RELATED AND OTHER CHARGES
("CHARGES")

         The Company incurred Charges of $27.0 million during the year ended
December 31, 1998 relating to the costs of integrating its acquisitions in 1998
and 1997 and its restructuring in 1998. Approximately $4.1 million of


<PAGE>   14


the Charges consisted of an allocation of resources to integration-related
activities associated with these acquisitions ("Integration Activity Costs").
The integration activities were completed by the end of 1998 and the internal
resources and their associated costs are recorded in their original operating
cost categories in 1999.

         For the six months ended June 30, 1998, the Company incurred $13.0
million in Charges of which $3.7 million related to internal resources allocated
to Integration Activity Costs. For the quarter ended June 30, 1998, the company
incurred $5.0 million in Charges, of which $1.7 million related to internal
resources allocated to Integration Activity Costs. (See Note 4 to the
accompanying unaudited consolidated financial statements.)

INTEREST INCOME, NET

         Interest income, net, decreased 36% to $1.7 million for the six months
ended June 30, 1999 from $2.6 million for the six months ended June 30, 1998. On
a quarter-to-quarter comparison, interest income, net, decreased 40% to $760,000
in the second quarter of 1999 from $1.3 million in the second quarter of 1998.
These decreases are primarily due to cash used to acquire common stock of the
Company under its on-going stock repurchase program, and investments in
Information Technology infrastructure.

INCOME TAXES

         Income tax expense increased due to increased income from continuing
operations to $367,000 for the six months ended June 30, 1999 from $145,000 for
the six months ended June 30, 1998. For the quarters ended June 30, 1999 and
1998 income tax expense increased to $254,000 from $9,000, respectively. The
effective income tax rate for the six months ended June 30, 1999 differs from
the expected rate of 39% due to a reduction in the valuation allowance as a
result of the utilization of federal and state net operating loss carryforwards.

DISCONTINUED OPERATIONS

         The Company discontinued its TrustedLink Procurement business ("TLP")
on September 30, 1998. The results of TLP for 1998 are reported in the
accompanying consolidated statements of operations under "Loss from discontinued
operations." (See Note 6 to the financial statements.)

NET INCOME AND EARNINGS PER SHARE

         Net income applicable to common shareholders increased to $7.6 million
or $.19 per diluted share, for the six months ended June 30, 1999 from net
income of $622,000 or $.01 per diluted share, for the six months ended June 30,
1998. Net income, adjusted to exclude a specific $1.2 million general and
administrative credit in the six months ended June 30, 1999 and the Charges and
discontinued operations in 1998, net of income taxes at 39%, would have been
$4.1 million or $0.10 per diluted share for the six months ended June 30, 1999,
compared to $9.1 million or $0.21 per diluted share in the same period in 1998,
representing a 55% decrease from 1998 to 1999.

         Net income applicable to common shareholders increased to $5.3 million
or $0.13 per diluted share for the quarter ended June 30, 1999 from $2.0 million
or $0.04 per diluted share for the quarter ended June 30, 1998. Net income,
adjusted to exclude a specific $502,000 general and administrative credit in the
second quarter of 1999 and the Charges and discontinued operations 1998, net of
the effect of income taxes at 39% would have been $3.1 million or $0.08 per
diluted share for the second quarter of 1999, compared to $4.7 million or $0.11
per diluted share in the same period in 1998, representing a 35% decrease from
1998 to 1999.


<PAGE>   15


LIQUIDITY AND CAPITAL RESOURCES

         The Company's working capital decreased $11.4 million to $67.9 million
as of June 30, 1999 from $79.3 million as of December 31, 1998, primarily due to
cash used to acquire common stock of the Company under its on-going stock
repurchase program, and investments in Information Technology infrastructure.

         Management expects the Company will continue to fund its operations,
investment needs and capital expenditures through cash flows generated from
operations, cash on hand, and additional equity and debt capital. Several
factors could have an impact on the Company's cash flows in the future,
including the effects of the Company's ongoing common stock repurchase program,
liquidation of liabilities incurred due to Charges and discontinued operations
and anticipated outlays for the Company's ongoing effort to enhance and
consolidate its information technology infrastructure. The Company does not
believe that inflation has had a material impact on its business, however, there
can be no assurance that Harbinger's business will not be affected by inflation
in the future.

YEAR 2000 COMPLIANCE

         Many currently installed computer systems and software products will
not properly process date information in the time period leading up to,
including and following the year 2000. These systems and products often store
and process the year field of date information as two digit numbers, and
misinterpret dates in the year 2000 and beyond as being dates in the year 1900
or subsequent years. This "Year 2000" issue impacts Harbinger both with respect
to its customers as a developer and vendor of computer software products and
services and internally for its information technology ("IT") and non-IT
systems.

         The Company formed a Year 2000 Steering Committee in July 1998 to
formally address the Company's Year 2000 issues, which formalized the Company's
Year 2000 assessment program begun in March 1997. The Year 2000 Steering
Committee has overseen the Company's Year 2000 Readiness Assessment Program,
which includes establishing the Company's standard for Year 2000 Readiness,
designing test parameters for its products, IT and non-IT systems, overseeing
the Company's remediation program, including establishing priorities for
remediation and allocating available resources, overseeing the communication of
the status of the Company's efforts to its customers, and establishing
contingency plans in the event the Company experiences Year 2000 disruptions.

         The Company describes its products and services as "Year 2000 Ready"
when they have been successfully tested using the procedure proscribed in its
Readiness Assessment Program. This procedure defines the criteria used to design
tests that seek to determine the Year 2000 readiness of a product. Under the
Company's criteria, a software product is Year 2000 Ready if it:

1.       Correctly handles date information before, during, and after January 1,
         2000, accepting date input, providing date output and performing
         calculation on dates or portions of dates.

2.       Functions accurately and without interruption before, during and after
         January 1, 2000 without changes in operation associated with the advent
         of the new century assuming correct configuration.

3.       Where appropriate, responds to two-digit date input in a way that
         resolves the ambiguity as to century in a disclosed, defined and
         pre-determined manner.

4.       Stores and provides output of date information in ways that are
         unambiguous as to century.

5.       Manages the leap year occurring in the year 2000, following the
         quad-centennial rule.

         As of June 30, 1999 Company management estimates that substantially all
of its product readiness testing has been completed. Certain of the Company's
customers, including resellers, are currently using legacy versions of the
Company's products for which a Year 2000 Ready version will not be developed.
The Company is


<PAGE>   16


implementing migration plans to move many of these customers to functionally
similar Year 2000 Ready products although some legacy products will not be
replaced. The Company has implemented a website on the Internet that includes a
general overview of the Company's Readiness Assessment Program, including a list
of products and the applicable Year 2000 Ready version numbers of such products.

         The Company is presently engaged in a significant upgrade of
substantially all of its core IT systems, including those related to sales,
customer service, human resources, finance, accounting and other enterprise
resource planning functions, as a result of its growth in recent years. The
Company believes that the upgraded systems, which it expects to have
substantially implemented by year-end 1999, are all Year 2000 Ready. The Company
is reviewing its remaining IT systems for Year 2000 Readiness, and expects to
modify, replace or discontinue the use of non-compliant systems before the end
of 1999. In addition, the Company is in the process of evaluating its Year 2000
readiness with respect to non-IT systems, including systems embedded in the
Company's communications and office facilities. In many cases these facilities
have been recently upgraded or are scheduled to be upgraded before year-end 1999
as a result of the Company's growth in recent years. The Company is in the
process of distributing surveys to its principal IT and non-IT systems and
services vendors soliciting information on their Year 2000 Readiness as part of
this review. The Company is also surveying its vendors' websites for additional
related information.

         The majority of the work performed for the Company's Year 2000
Readiness Assessment Program has been completed by the Company's staff.
Additionally, the Company engaged outside advisors to evaluate the Readiness
Assessment Program and to participate in certain elements of product testing.
The total costs for completing the Year 2000 Readiness Assessment Program,
including modifications to the Company's software products, is estimated to be
between $1 million and $2 million, funded through the Company's internal
operating cash flows. This cost does not include the cost for new software, or
for modifications to existing software, for the Company's core IT and non-IT
systems, as these projects were not accelerated due to the Year 2000 issue.
Approximately $60,000 in cost remains to be incurred to complete the Company's
Readiness Assessment Program.

         The Company believes that the purchasing patterns of customers and
potential customers may be affected by Year 2000 issues in a variety of ways.
Many companies are expending significant resources to correct or patch their
current software systems for Year 2000 compliance. These expenditures may result
in reduced funds available to purchase software products such as those offered
by the Company. Potential customers may also choose to defer purchasing Year
2000 compliant products until they believe it is absolutely necessary, thus
resulting in potentially stalled market sales within the industry. Conversely,
Year 2000 issues may cause other companies to accelerate purchases, thereby
causing an increase in short-term demand and a consequent decrease in long-term
demand for software products. In addition, Year 2000 issues could cause a
significant number of companies, including current Company customers, to
reevaluate their current software needs, and as a result switch to other systems
or suppliers. Any of the foregoing could result in a material adverse effect on
the Company's business, operating results and financial condition.

         The Company has made considerable progress in developing contingency
plans and expects to complete its contingency plans prior to year-end 1999. In
the case of certain of the Company's value-added network operations, it will be
difficult for the Company to seamlessly implement alternative service
arrangements due to the nature and complexity of the customer interface. While
the Company believes that its Readiness Assessment Program is addressing the
risks specific to the Company for the Year 2000 issue, including its operations
in markets outside of the United States, we cannot be assured that events will
not occur that could have a material adverse impact on our business, operating
results and financial condition. Such events include the risk of our failure to
successfully test our software and services that we have certified as Year 2000
Ready, lawsuits from customers and our customers' customers and the inability to
process data internally on our IT systems. Further, the Company is aware of the
risk that domestic and international third parties, including vendors and
customers of the Company, will not adequately address the Year 2000 problem and
the resultant potential adverse impact on them and us. Regardless of whether the
Company's products are Year 2000 compliant, there can be no assurance that
customers will not assert Year 2000 related claims against the Company.


<PAGE>   17


FORWARD LOOKING STATEMENTS

         Other than historical information contained herein, certain statements
included in this report may constitute "forward looking" statements within the
meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934
related to the Company that involve risks and uncertainties including, but not
limited to, quarterly fluctuations in results, the management of growth, market
acceptance of certain products, impact of Year 2000 compliance and other risks.
For further information about these and other factors that could affect the
Company's future results, please see the Company's most recent Form 10-K filed
with the Securities and Exchange Commission. Investors are cautioned that any
forward looking statements are not guarantees of future performance and involve
risks and uncertainties and that actual results may differ materially from those
contemplated by such forward looking statements. The Company undertakes no
obligation to update or revise forward looking statements to reflect changed
assumptions, the occurrence of unanticipated events or changes to future
operating results.


<PAGE>   18


PART II.  OTHER INFORMATION

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         The Annual Meeting of Shareholders of Harbinger Corporation was held on
April 30, 1999. The results of such meeting were included in Item 4 of Company's
Form 10-Q for the quarterly period ended March 31, 1999 and are incorporated by
reference herein.

ITEM 6.  EXHIBITS

<TABLE>
         <S>      <C>               <C>
         (a)      Exhibits

                  Exhibit 10.1      Addendum to the Employment Agreement of Daniel L. Manack

                  Exhibit 10.2      Addendum to the Employment Agreement of Douglas L Roberts

                  Exhibit 10.3      Fifth Amendment to the Amended and Restated 1993 Stock Option Plan for
                                    Non-Employee Directors

                  Exhibit 10.4      Fourth Amendment to the 1996 Stock Option Plan

                  Exhibit 11.1      Computation of Earnings Per Share

                  Exhibit 27.1      Financial Data Schedule (for SEC use only)

                  Exhibit 27.2      Restated Financial Data Schedule (for SEC use only)
</TABLE>



<PAGE>   19


                               S I G N A T U R E S


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 thereunto duly authorized.



                                           HARBINGER CORPORATION





Date:       August 13, 1999                /s/ C. Tycho Howle
     -----------------------------         -------------------------------------
                                           C. Tycho Howle
                                           Chief Executive Officer
                                           (Principal Executive Officer)



Date:       August 13, 1999                /s/ James K. McCormick
     -----------------------------         -------------------------------------
                                           James K. McCormick
                                           Chief Financial Officer
                                           (Principal Financial Officer;
                                           Principal Accounting Officer)



<PAGE>   1
                                                                    EXHIBIT 10.1


                                 ADDENDUM TO THE

                              EMPLOYMENT AGREEMENT

                                       OF

                                DANIEL L. MANACK


         THIS AMENDMENT is made this 1st day of May, 1999, by and between
HARBINGER CORPORATION, a Georgia corporation (the "Company"), and Daniel L.
Manack (the "Executive").

         A.       Purpose. The Executive is now employed by the Company pursuant
                  to an Employment Agreement dated December 4, 1996 (the
                  "Agreement") and the Company desires to provide an incentive
                  to the Executive to continue to devote his full attention and
                  undistracted dedication to the performance of his duties in
                  the potentially disturbing circumstances of a Change of
                  Control of the Company.

         B.       Severance Benefits and Limitations on Payment. If the
                  Executive's employment with the Company is terminated by the
                  Company other than for Cause or by the Executive for Good
                  Reason within the period beginning ninety (90) days before and
                  ending one hundred and eighty (180) days after a Change of
                  Control, (i) any stock options awarded the Executive which
                  remain outstanding and not vested as of the Date of
                  Termination shall be deemed vested and exercisable; provided
                  that acceleration in vesting does not adversely impact the
                  availability of pooling of interests accounting treatment, as
                  such determination is made by the Board in its reasonable
                  discretion, and (ii) the Executive will receive severance pay
                  equal to his annual base salary for six (6) months. However,
                  should the Executive's employment be terminated due to a
                  Change in Control within one year of the effective date of
                  this agreement, the severance pay will equal nine (9) months
                  of his annual base salary.

         C.       Definitions. For purposes of this Amendment, the following
                  definitions shall apply:

                  1.       Change of Control. A "Change of Control" shall be
                  conclusively deemed to have occurred if (and only if) any of
                  the following shall have taken place: (i) a Change of Control
                  is reported by the Company in response to either Item 6(e) of
                  Schedule 14A of Regulation 14A promulgated under the
                  Securities Exchange Act of 1934, as amended ("Exchange Act"),
                  or Item 1 of Form 8-K promulgated under the Exchange Act; (ii)
                  any person (as such term is used in Section 13(d) and 14(d)(2)
                  of the Exchange Act) is or becomes the beneficial owner (as
                  defined in Rule 13d-3 under the Exchange Act) directly


<PAGE>   2


                  or indirectly, of securities of the Company representing forty
                  percent (40%) or more of the combined voting power of the
                  Company's then outstanding securities; or (iii) following the
                  election or removal of directors, a majority of the Board
                  consists of individuals who were not members of the Board two
                  years before such election or removal, unless the election of
                  each director who was not a director at the beginning of such
                  two-year period has been approved in advance by directors
                  representing at least a majority of the directors then in
                  office who were directors at the beginning of the two-year
                  period.

                  2.       Date of Termination. "Date of Termination" means the
                  date on which a notice of termination is given either by the
                  Company or by the Executive.

                  3.       Good Reason. "Good Reason" means the Executive's
                  termination of employment for any of the following events,
                  unless such event occurs with the Executive's express prior
                  written consent:

                           (a)      The assignment to the Executive of any
                                    duties materially inconsistent with, or a
                                    diminution of, his position, duties, titles,
                                    offices, responsibilities and status with
                                    the Company as in effect immediately prior
                                    to the Change of Control of the Company,
                                    except in connection with the termination of
                                    the Executive's employment for disability,
                                    retirement, or Cause or as a result of the
                                    Executive's death or termination of
                                    employment other than for Good Reason;

                           (b)      A reduction in the Executive's base salary
                                    as in effect on the date of this Amendment
                                    or as the same may be increased from time to
                                    time;

                           (c)      A change in the location of the Executive's
                                    principal place of employment by more than
                                    seventy-five (75) miles from the location
                                    where he was principally employed
                                    immediately prior to the Change of Control;

                           (d)      Any material breach by the Company of any
                                    provision of this Amendment or the
                                    Agreement; or

                           (e)      Any failure by the Company to obtain the
                                    assumption of the Agreement by any successor
                                    or assign of the Company.

                  4.       Cause. "Cause" means termination of the Executive's
                  employment under any one or more of the following events:

                           (a)      Executive's knowing and willful misconduct
                                    with respect to the business and affairs of
                                    the Company;

                           (b)      Any material violation by Executive of any
                                    policy of the Company relating to ethical
                                    conduct or practices or fiduciary duties of
                                    a similarly situated executive;

                           (c)      Knowing and willful material breach of any
                                    provision of this Agreement which is not
                                    remedied within thirty (30) days after
                                    Executive's receipt of notice thereof;


<PAGE>   3


                           (d)      Executive's commission of a felony or any
                                    illegal act involving moral turpitude or
                                    fraud or Executive's dishonesty which may
                                    reasonably be expected to have a material
                                    adverse effect on the Company; and/or

                           (e)      Failure to comply with reasonable directives
                                    of the Board which are consistent with the
                                    Executive's duties, if not remedied within
                                    thirty (30) days after the Executive's
                                    receipt of notice thereof.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the 1st day of May, 1999.

HARBINGER CORPORATION:                      EMPLOYEE:


James M. Travers                            Daniel L. Manack
- -----------------------------------         -----------------------------------
Name                                        Name


President & Chief Operating Officer         /s/ Daniel L. Manack
- -----------------------------------         -----------------------------------
Title                                       Signature


/s/ James M. Travers
- -----------------------------------
Signature



<PAGE>   1
                                                                    EXHIBIT 10.2


                                 ADDENDUM TO THE

                              EMPLOYMENT AGREEMENT

                                       OF

                               DOUGLAS L. ROBERTS


         THIS AMENDMENT is made this ______ day of April, 1999, by and between
HARBINGER CORPORATION, a Georgia corporation (the "Company"), and Douglas L.
Roberts (the "Executive").

         A.       Purpose. The Executive will be employed by the Company
                  pursuant to an Employment Agreement dated April ______, 1999
                  (the "Agreement") and the Company desires to provide an
                  incentive to the Executive to continue to devote his full
                  attention and undistracted dedication to the performance of
                  his duties in the potentially disturbing circumstances of a
                  Change of Control of the Company.

         B.       Severance Benefits and Limitations on Payment. If the
                  Executive's employment with the Company is terminated by the
                  Company other than for Cause or by the Executive for Good
                  Reason within the period beginning ninety (90) days before and
                  ending one hundred and eighty (180) days after a Change of
                  Control, (i) any stock options awarded the Executive which
                  remain outstanding and not vested as of the Date of
                  Termination shall be deemed vested and exercisable; provided
                  that acceleration in vesting does not adversely impact the
                  availability of pooling of interests accounting treatment, as
                  such determination is made by the Board in its reasonable
                  discretion, and (ii) the Executive will receive severance pay
                  equal to his annual base salary for six (6) months.

         C.       Definitions. For purposes of this Amendment, the following
                  definitions shall apply:

                  5.       Change of Control. A "Change of Control" shall be
                  conclusively deemed to have occurred if (and only if) any of
                  the following shall have taken place: (i) a Change of Control
                  is reported by the Company in response to either Item 6(e) of
                  Schedule 14A of Regulation 14A promulgated under the
                  Securities Exchange Act of 1934, as amended ("Exchange Act"),
                  or Item 1 of Form 8-K promulgated under the Exchange Act; (ii)
                  any person (as such term is used in Section 13(d) and 14(d)(2)
                  of the Exchange Act) is or


<PAGE>   2


                  becomes the beneficial owner (as defined in Rule 13d-3 under
                  the Exchange Act) directly or indirectly, of securities of the
                  Company representing forty percent (40%) or more of the
                  combined voting power of the Company's then outstanding
                  securities; or (iii) following the election or removal of
                  directors, a majority of the Board consists of individuals who
                  were not members of the Board two years before such election
                  or removal, unless the election of each director who was not a
                  director at the beginning of such two-year period has been
                  approved in advance by directors representing at least a
                  majority of the directors then in office who were directors at
                  the beginning of the two-year period.

                  6.       Date of Termination. "Date of Termination" means the
                  date on which a notice of termination is given either by the
                  Company or by the Executive.

                  7.       Good Reason. "Good Reason" means the Executive's
                  termination of employment for any of the following events,
                  unless such event occurs with the Executive's express prior
                  written consent:

                           (a)      The assignment to the Executive of any
                                    duties materially inconsistent with, or a
                                    diminution of, his position, duties, titles,
                                    offices, responsibilities and status with
                                    the Company as in effect immediately prior
                                    to the Change of Control of the Company,
                                    except in connection with the termination of
                                    the Executive's employment for disability,
                                    retirement, or Cause or as a result of the
                                    Executive's death or termination of
                                    employment other than for Good Reason;

                           (b)      A reduction in the Executive's base salary
                                    as in effect on the date of this Amendment
                                    or as the same may be increased from time to
                                    time;

                           (c)      A change in the location of the Executive's
                                    principal place of employment by more than
                                    seventy-five (75) miles from the location
                                    where he was principally employed
                                    immediately prior to the Change of Control;

                           (d)      Any material breach by the Company of any
                                    provision of this Amendment or the
                                    Agreement; or

                           (e)      Any failure by the Company to obtain the
                                    assumption of the Agreement by any successor
                                    or assign of the Company.

                  8.       Cause. "Cause" means termination of the Executive's
                  employment under any one or more of the following events:

                           (a)      Executive's knowing and willful misconduct
                                    with respect to the business and affairs of
                                    the Company;

                           (b)      Any material violation by Executive of any
                                    policy of the Company relating to ethical
                                    conduct or practices or fiduciary duties of
                                    a similarly situated executive;

                           (c)      Knowing and willful material breach of any
                                    provision of this Agreement which is not
                                    remedied within thirty (30) days after
                                    Executive's receipt of notice thereof;


<PAGE>   3


                           (d)      Executive's commission of a felony or any
                                    illegal act involving moral turpitude or
                                    fraud or Executive's dishonesty which may
                                    reasonably be expected to have a material
                                    adverse effect on the Company; and/or

                           (e)      Failure to comply with reasonable directives
                                    of the Board which are consistent with the
                                    Executive's duties, if not remedied within
                                    thirty (30) days after the Executive's
                                    receipt of notice thereof.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the ______ day of April, 1999.

HARBINGER CORPORATION:                      EMPLOYEE:

James M. Travers                            Douglas L. Roberts
- -----------------------------------         ------------------------------------
Name                                        Name

President & Chief Operating Officer         /s/ Douglas L. Roberts
Title                                       Signature

/s/ James M Travers
- -----------------------------------
Signature



<PAGE>   1
                                                                    EXHIBIT 10.3


                  FIFTH AMENDMENT TO THE HARBINGER CORPORATION
                   AMENDED AND RESTATED 1993 STOCK OPTION PLAN
                           FOR NON-EMPLOYEE DIRECTORS

         THIS FIFTH AMENDMENT TO THE HARBINGER CORPORATION AMENDED AND RESTATED
1993 STOCK OPTION PLAN FOR NON-EMPLOYEE DIRECTORS (the "Amendment") is made
effective as of the 30th day of April, 1999 (the "Effective Date"), by HARBINGER
CORPORATION, a corporation organized and doing business under the laws of the
State of Georgia (the "Company"). All capitalized terms in this Amendment have
the meaning ascribed to such term as in the Harbinger Corporation Amended and
Restated 1993 Stock Option Plan for Non-Employee Directors (the "Plan"), unless
otherwise stated herein.

                              W I T N E S S E T H:

         WHEREAS, the Second Amendment to the Plan was approved by the
Shareholders of the Company at the May 8, 1996 Annual Meeting of Shareholders;

         WHEREAS, the Third Amendment to the Plan was approved by the Board of
Directors of the Company at the March 24, 1997 Board Meeting;

         WHEREAS, the Fourth Amendment to the Plan was approved by the
Shareholders of the Company at the April 24, 1998 Annual Meeting of
Shareholders; and

         WHEREAS, the Board of Directors of the Company desires to alter the
vesting of options granted under the Plan.

         NOW THEREFORE, in consideration of the premises and mutual promises
contained herein, the Plan is hereby amended as follows:

         SECTION 1. Section 5.2 of the Plan is hereby amended by deleting
Section 5.2 of the Plan in its entirety and substituting in lieu thereof the
following:

         5.2      OPTION GRANT SIZE AND GRANT DATES.

                  5.2.1 ANNUAL GRANTS. An option to purchase 15,000 Shares of
         Common Stock (as adjusted pursuant to Section 6) shall automatically be
         granted to each Eligible Director on the date of, and at a time which
         shall be immediately following, the Annual Meeting at which this Plan
         is approved by the stockholders of the Company (an "Annual Grant").
         Subsequent Options, each for 15,000 Shares of Common Stock (as adjusted
         pursuant to Section 6), shall be granted to each Eligible Director on
         the date of, and at a time which shall be immediately following, every
         succeeding Annual Meeting of the stockholders (also an "Annual Grant").
         For purposes of this Plan, "Annual Meeting" means the annual meeting of
         the Company's stockholders as described in the Company's Bylaws and as
         determined by the Chief Executive Officer of the Company. Subsequent
         options shall automatically be granted hereunder at each Annual Meeting
         until the Shares available for grant hereunder shall no longer be
         sufficient to grant each Eligible Director an option for the number of
         Shares determined according to this Section 5.2.1, at which time the
         Shares remaining available for grant shall be allocated proportionately
         among the Eligible Directors entitled to the next following Annual
         Grant. Eligible Directors shall not be entitled to any payment of cash
         hereunder in lieu of receiving options.

                  5.2.2 INTERIM GRANTS. Each Eligible Director who is first
         appointed or elected to the Board and attends a regular quarterly
         meeting of the Board which occurs at a time other than at an Annual
         Meeting shall be granted an option ("Interim Grant") to purchase a
         number of Shares of Common Stock equal to the product of (a) 15,000 (as
         adjusted pursuant to Section 6) and (b) a fraction, the numerator of
         which shall be the number of regular quarterly directors' meetings
         expected by the Chief Executive Officer of the Company to occur between
         the date that such Eligible Director is appointed or elected to the
         Board and the first Annual Meeting following such appointment or
         election, and the denominator of which is four. Annual Meetings and
         regular quarterly Directors'


<PAGE>   2


         meetings shall be scheduled according to the Company's Bylaws,
         applicable law, and Company policy and shall be designated by the Chief
         Executive Officer of the Company.

         SECTION 2. Section 5.4 of the Plan is hereby amended by deleting
Section 5.4 of the Plan in its entirety and substituting in lieu thereof the
following:

         5.4      VESTING; EXERCISABILITY. Each option shall be fully vested and
         exercisable on its grant date. Such vesting shall be uniform for all
         Eligible Directors under the Plan and is more fully set out in Section
         2 of the Option Agreement.

         SECTION 3. The form of agreement currently used to evidence options
granted under the Plan shall be replaced with the form of agreement attached
hereto as Exhibit A for Non-employee Directors from The Netherlands and as
Exhibit B for all other Non-employee Directors.

         SECTION 4. Except as specifically amended by this Fifth Amendment, the
Plan shall remain in full force and effect as prior to this Fifth Amendment.

         IN WITNESS WHEREOF, the Company has caused this Fifth Amendment to the
Harbinger Corporation Amended and Restated 1993 Stock Option Plan for
Non-Employee Directors to be executed on the Effective Date.


                                            HARBINGER CORPORATION



                                            By:     /s/ C. Tycho Howle
                                               ------------------------------
                                                     C. Tycho Howle
                                            Title: Chairman and CEO

ATTEST:


By:  /s/ Loren Wimpfheimer
   -----------------------------
      Loren B. Wimpfheimer
Title:   Secretary


<PAGE>   3
                                                                       EXHIBIT A

                             STOCK OPTION AGREEMENT
                                       AND
                                  OPTION GRANT


                              HARBINGER CORPORATION
                   AMENDED AND RESTATED 1993 STOCK OPTION PLAN
                        FOR (DUTCH) NONEMPLOYEE DIRECTORS


                  THIS STOCK OPTION AGREEMENT (the "Option Agreement") is made
and entered into as of the date set forth below, by and between HARBINGER
CORPORATION (hereinafter called the "Company"), a corporation organized and
existing under the laws of the State of Georgia, and the undersigned, an
individual resident of the state designated below (hereinafter called
"Optionee").

                  The Company has adopted the Harbinger Corporation Amended and
Restated 1993 Stock Option Plan for Nonemployee Directors (the "Plan"). The Plan
was amended on April 30, 1999 to provide for immediate vesting of options. This
Option Agreement is being made pursuant to the Plan and capitalized terms used
herein shall have the same meanings as those terms have in the Plan unless the
context in which these terms are used herein requires otherwise or the terms are
otherwise defined herein. The date of the grant of the option under this Option
Agreement is as of the date specified below (the "Option Date").

         1. GRANT OF OPTION. The Company hereby grants to Optionee an option to
purchase the number of shares of $.0001 par value Common Stock of the Company
(the "Shares") designated below ("Option Shares"). Any portion of the option not
exercised by Optionee as provided herein will expire on the day prior to the
fifth anniversary of the Option Date unless sooner terminated as provided
herein. The stock issued on the exercise of this option, when paid for as herein
provided, will be fully paid and nonassessable.

         2. EXERCISE OF OPTION. This option is fully vested and may be exercised
only during the period beginning on the Option Date and ending on the day prior
to the fifth anniversary date hereof (the "Term") described below.

                  The terms contained in the Plan are incorporated into and made
a part of this Option Agreement, and this Option Agreement shall be governed by
and construed in accordance with the Plan. A "regular quarterly meeting" shall
refer to a regular meeting (including an Annual Meeting or a special meeting
held in lieu of a regular meeting) of the Board held on a quarterly basis, as
determined by the Chief Executive Officer of the Company.

                  Each exercise of the option shall be by written notice in the
form of an exercise agreement provided by the Board to the President or
principal financial officer of the Company at its principal place of business,
accompanied by payment in cash, by bank-certified, cashier's or personal check
in the amount of the purchase price for the number of the Shares purchased. The
date of each exercise of this option shall be the date upon which the notice is
received by the appropriate officer.

                  The Company shall not be obligated to sell or issue any Shares
pursuant to the option unless the issuance of such Shares is at that time
effectively registered or exempt from


<PAGE>   4

registration under the Securities Act of 1933, as amended, and any other
applicable securities laws. In connection therewith, the Company may require
from Optionee at the time of exercise reasonable representations and warranties
with respect to the investment intent of Optionee and Optionee's status as an
investor in the Shares in order to qualify for exemptions from registration
under state or federal securities laws.

                  Within a reasonable time after receipt of the notice of
exercise, the Company will take steps to ascertain compliance with this Option
Agreement. The Company shall then cause certificates representing the Shares for
the option exercised to be delivered as soon as reasonably possible, provided,
however, that if any law, regulation, or agreement requires the Company to take
action with respect to the Shares purchased prior to issuance, the date of
issuance of the Shares shall be extended for the period necessary to take such
action and comply with such law, regulation or agreement.

         3. ADMINISTRATION. This Agreement shall be administered, construed and
interpreted by the Board with reference to the terms, conditions, and
interpretive provisions of the Plan.

         4. PURCHASE PRICE. The purchase price per Option Share shall be as
designated below ("Exercise Price"), which is equal to or greater than 100% of
the fair market value of a share of Common Stock as of the Option Date.

         5. TERMINATION OF SERVICE OR DEATH. In the event Optionee, during his
or her life, ceases to be an Eligible Director for any reason, any unexercised
portion of the option shall terminate one (1) year after termination of
Optionee's status as an Eligible Director due to disability (within the meaning
of Section 22(e)(3) of the Internal Revenue Code of 1986, as amended) and thirty
(30) days after the termination of Optionee's status as an Eligible Director for
any other reason, but in no event after the expiration of the term of the
option.

                  In the event of the death of Optionee while Optionee is an
Eligible Director, but before the expiration of this option, the personal
representatives, heirs or legatees of Optionee may exercise the option held by
Optionee. The personal representatives, heirs or legatees must exercise any such
option within thirty (30) days after the date of the death of Optionee and in
any event prior to the date of expiration of the option, and such exercise
otherwise shall be subject to the terms and conditions of this Option Agreement
and the Plan.

         6.       NO RIGHTS IN OPTION SHARES. Optionee shall have no rights as a
                  shareholder in respect of Shares covered by this Option
                  Agreement until the date of issuance of the Shares to him or
                  her and only after the Shares are fully paid. Optionee shall
                  have no rights with respect to such Shares not expressly
                  conferred by this Option Agreement.

         7. NONASSIGNABILITY. This option shall not be encumbered or transferred
in whole or in part except by will or the laws of descent and distribution, and
is exercisable during the lifetime of Optionee only by him or her, except as
expressly permitted by the Board.

                  In consideration for the grant of this option, Optionee
promises to use his or her best efforts in furtherance of the Company's business
and prospects and in the exercise of his or her duties as a member of the Board
of Directors of the Company.


<PAGE>   5

         IN WITNESS WHEREOF, the parties hereunto have set their hands and seals
as of the Option Date set forth below.

Option Date:                           HARBINGER CORPORATION
             --------------------
Option Shares:
             --------------------
                                       By:
Exercise Price:                            ------------------------------------
             --------------------
                                       Title:
Check One: Annual Grant                        --------------------------------
                        ---------

           Interim Grant
                        ---------

                                       OPTIONEE

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



                                       Address:
                                                -------------------------------
                                                -------------------------------
                                                -------------------------------

                                       State of Residence:
                                                           --------------------


<PAGE>   6


                                                                       EXHIBIT B

                             STOCK OPTION AGREEMENT
                                       AND
                                  OPTION GRANT


                              HARBINGER CORPORATION
                   AMENDED AND RESTATED 1993 STOCK OPTION PLAN
                            FOR NONEMPLOYEE DIRECTORS


                  THIS STOCK OPTION AGREEMENT (the "Option Agreement") is made
and entered into as of the date set forth below, by and between HARBINGER
CORPORATION (hereinafter called the "Company"), a corporation organized and
existing under the laws of the State of Georgia, and the undersigned, an
individual resident of the state designated below (hereinafter called
"Optionee").

                  The Company has adopted the "Harbinger Corporation Amended and
Restated 1993 Stock Option Plan for Nonemployee Directors" (the "Plan"). The
Plan was amended on April 30, 1999 to provide for immediate vesting of option.
This Option Agreement is being made pursuant to the Plan and capitalized terms
used herein shall have the same meanings as those terms have in the Plan unless
the context in which these terms are used herein requires otherwise or the terms
are otherwise defined herein. The date of the grant of the option under this
Option Agreement is as of the date specified below (the "Option Date").

         1. GRANT OF OPTION. The Company hereby grants to Optionee an option to
purchase the number of shares of $.0001 par value Common Stock of the Company
(the "Shares") designated below ("Option Shares"). Any portion of the option not
exercised by Optionee as provided herein will expire on the seventh anniversary
of the Option Date unless sooner terminated as provided herein. The stock issued
on the exercise of this option, when paid for as herein provided, will be fully
paid and nonassessable.

         2. EXERCISE OF OPTION. This option is fully vested and may be exercised
only during the period beginning on the Option Date and ending on the seventh
anniversary date hereof (the "Term") described below.

                  The terms contained in the Plan are incorporated into and made
a part of this Option Agreement, and this Option Agreement shall be governed by
and construed in accordance with the Plan. A "regular quarterly meeting" shall
refer to a regular meeting (including an Annual Meeting or a special meeting
held in lieu of a regular meeting) of the Board held on a quarterly basis, as
determined by the Chief Executive Officer of the Company.

                  Each exercise of the option shall be by written notice in the
form of an exercise agreement provided by the Board to the President or
principal financial officer of the Company at its principal place of business,
accompanied by payment in cash, by bank-certified, cashier's or personal check
in the amount of the purchase price for the number of the Shares purchased. The
date of each exercise of this option shall be the date upon which the notice is
received by the appropriate officer.


<PAGE>   7

                  The Company shall not be obligated to sell or issue any Shares
pursuant to the option unless the issuance of such Shares is at that time
effectively registered or exempt from registration under the Securities Act of
1933, as amended, and any other applicable securities laws. In connection
therewith, the Company may require from Optionee at the time of exercise
reasonable representations and warranties with respect to the investment intent
of Optionee and Optionee's status as an investor in the Shares in order to
qualify for exemptions from registration under state or federal securities laws.

                  Within a reasonable time after receipt of the notice of
exercise, the Company will take steps to ascertain compliance with this Option
Agreement. The Company shall then cause certificates representing the Shares for
the option exercised to be delivered as soon as reasonably possible, provided,
however, that if any law, regulation, or agreement requires the Company to take
action with respect to the Shares purchased prior to issuance, the date of
issuance of the Shares shall be extended for the period necessary to take such
action and comply with such law, regulation or agreement.

         3. ADMINISTRATION. This Agreement shall be administered, construed and
interpreted by the Board with reference to the terms, conditions, and
interpretive provisions of the Plan.

         4. PURCHASE PRICE. The purchase price per Option Share shall be as
designated below ("Exercise Price"), which is equal to or greater than 100% of
the fair market value of a share of Common Stock as of the Option Date.

         5. TERMINATION OF SERVICE OR DEATH. In the event Optionee, during his
or her life, ceases to be an Eligible Director for any reason, any unexercised
portion of the option shall terminate one (1) year after termination of
Optionee's status as an Eligible Director due to disability (within the meaning
of Section 22(e)(3) of the Internal Revenue Code of 1986, as amended) and thirty
(30) days after the termination of Optionee's status as an Eligible Director for
any other reason, but in no event after the expiration of the term of the
option.

                  In the event of the death of Optionee while Optionee is an
Eligible Director, but before the expiration of this option, the personal
representatives, heirs or legatees of Optionee may exercise the option held by
Optionee on the date of Optionee's death. The personal representatives, heirs or
legatees must exercise any such option within thirty (30) days after the date of
the death of Optionee and in any event prior to the date of expiration of the
option, and such exercise otherwise shall be subject to the terms and conditions
of this Option Agreement and the Plan.

         6. NO RIGHTS IN OPTION SHARES. Optionee shall have no rights as a
shareholder in respect of Shares covered by this Option Agreement until the date
of issuance of the Shares to him or her and only after the Shares are fully
paid. Optionee shall have no rights with respect to such Shares not expressly
conferred by this Option Agreement.

         7. NONASSIGNABILITY. This option shall not be encumbered or transferred
in whole or in part except by will or the laws of descent and distribution, and
is exercisable during the lifetime of Optionee only by him or her, except as
expressly permitted by the Board.

                  In consideration for the grant of this option, Optionee
promises to use his or her best efforts in furtherance of the Company's business
and prospects and in the exercise of his or her duties as a member of the Board
of Directors of the Company.


<PAGE>   8

         IN WITNESS WHEREOF, the parties hereunto have set their hands and seals
as of the Option Date set forth below.

Option Date:                           HARBINGER CORPORATION
             --------------------
Option Shares:
             --------------------
                                       By:
Exercise Price:                            ------------------------------------
             --------------------
                                       Title:
Check One: Annual Grant                        --------------------------------
                        ---------

           Interim Grant
                        ---------

                                       OPTIONEE

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



                                       Address:
                                                -------------------------------
                                                -------------------------------
                                                -------------------------------

                                       State of Residence:
                                                           --------------------


<PAGE>   1
                                                                    EXHIBIT 10.4


                  FOURTH AMENDMENT TO THE HARBINGER CORPORATION

                             1996 STOCK OPTION PLAN


         THIS FOURTH AMENDMENT TO THE HARBINGER CORPORATION 1996 STOCK OPTION
PLAN (the "Amendment") is made effective as of the 1st day of May, 1999 (the
"Effective Date"), by HARBINGER CORPORATION, a corporation organized and doing
business under the laws of the State of Georgia (the "Company"). All capitalized
terms in this Amendment have the meaning ascribed to such term as in the
Harbinger Corporation 1996 Stock Option Plan (the "Plan"), unless otherwise
stated herein.

                              W I T N E S S E T H:

         WHEREAS, the First Amendment to the Plan was approved by the
shareholders of the Company at the 1997 Annual Meeting of Shareholders;

         WHEREAS, the Second Amendment to the Plan was approved by the
shareholders of the Company at the Special Meeting of Shareholders held on
December 18, 1997;

         WHEREAS, the Third Amendment to the Plan was approved by the
shareholders of the Company at the 1998 Annual Meeting of Shareholders; and

         WHEREAS, the Board of Directors of the Company desires to amend the
Plan to add certain provisions to insure compliance with the safe harbor
provisions of Section 162(m) of the Internal Revenue Code of 1986, as amended,
and the regulations promulgated thereunder;

         NOW, THEREFORE, in consideration of the premises and mutual promises
contained herein, the Plan is hereby amended as follows:

         SECTION 1. Section 3.1 of the Plan is hereby amended by deleting the
first sentence of Section 3.1 of the Plan in its entirety and substituting in
lieu thereof the following:

                  "3.1 Shares Reserved for Issuance. Subject to any antidilution
         adjustment pursuant to Section 3.2, the maximum number of Shares that
         may be subject to Options granted hereunder shall not exceed 8,737,500,
         plus the number of Prior Plan Shares; provided, however, the maximum
         number of Shares with respect to which Options may be granted to any
         individual grantee in any calendar year shall be 1,000,000."

         SECTION 2. Section 5 of the Plan is hereby amended by deleting the
first sentence of Section 2 in its entirety and substituting in lieu thereof the
following:

                  "This Plan shall be administered by the Committee, which shall
         consist of three (3) or more directors appointed by the Board, each of
         whom is an "outside director" within the meaning of Section 162(m) of
         the Code and is not while a member of the Committee, or was not during
         the one (1) year prior to serving as a member of the Committee,
         eligible to receive equity securities of the Company, or any affiliate
         of the Company, pursuant to this Plan, the Prior Plan, or any other
         plan of the Company or any affiliate of the Company, except as may be
         permitted under Section 16(b)(3) of the Exchange Act."

         SECTION 3. Except as specifically amended by this Fourth Amendment, the
Plan shall remain in full force and effect as prior to this Fourth Amendment.


<PAGE>   2


         IN WITNESS WHEREOF, the Company has caused this FOURTH AMENDMENT TO THE
HARBINGER CORPORATION 1996 STOCK OPTION PLAN to be executed on the Effective
Date.

                                            HARBINGER CORPORATION


                                            By:    /s/ C. Tycho Howle
                                               ---------------------------------
                                                    C. Tycho Howle
                                               Title: Chairman and CEO



ATTEST:


By:  /s/ Loren Wimpfheimer

   ------------------------------
       Loren B. Wimpfheimer
Title:   Secretary



<PAGE>   1
                                                                    EXHIBIT 11.1


                              HARBINGER CORPORATION
                        COMPUTATION OF EARNINGS PER SHARE
                                   (UNAUDITED)
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)


<TABLE>
<CAPTION>
                                                           Three Months Ended        Six Months Ended
                                                                June 30,                 June 30,
                                                          --------------------      --------------------
                                                            1999         1998        1999         1998
                                                          -------      -------      -------      -------
<S>                                                       <C>          <C>          <C>          <C>
Basic:

    Net income available to common
      shareholders...............................         $ 5,277      $ 1,959      $ 7,617      $   622
                                                          =======      =======      =======      =======

    Weighted average number of common
      shares outstanding.........................          38,294       41,853       39,082       41,451
                                                          =======      =======      =======      =======

    Basic earnings per share.....................         $  0.14      $  0.05      $  0.19      $  0.01
                                                          =======      =======      =======      =======

Diluted :

    Net income available to common
      shareholders...............................         $ 5,277      $ 1,959      $ 7,617      $   622
                                                          =======      =======      =======      =======

    Weighted average number of common
      shares outstanding.........................          38,294       41,853       39,082       41,451

    Effect of potentially dilutive stock options and
      warrants...................................           1,387        2,627        1,964        2,652
                                                          -------      -------      -------      -------

    Weighted average number of common
      shares outstanding assuming dilution.......          39,681       44,480       41,046       44,103
                                                          =======      =======      =======      =======

    Diluted earnings per share................. .         $  0.13      $  0.04      $  0.19      $  0.01
                                                          =======      =======      =======      =======
</TABLE>



<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS OF HARBINGER CORPORATION FOR THE SIX MONTHS
ENDED JUNE 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
CONSOLIDATED FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          30,203
<SECURITIES>                                    38,085
<RECEIVABLES>                                   47,161
<ALLOWANCES>                                     5,445
<INVENTORY>                                          0
<CURRENT-ASSETS>                               117,649
<PP&E>                                          51,747
<DEPRECIATION>                                  25,262
<TOTAL-ASSETS>                                 160,812
<CURRENT-LIABILITIES>                           49,778
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             4
<OTHER-SE>                                     111,030
<TOTAL-LIABILITY-AND-EQUITY>                   160,812
<SALES>                                         20,423
<TOTAL-REVENUES>                                72,229
<CGS>                                            2,487
<TOTAL-COSTS>                                   24,734
<OTHER-EXPENSES>                                41,169
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  7,984
<INCOME-TAX>                                       367
<INCOME-CONTINUING>                              7,617
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,617
<EPS-BASIC>                                        .19
<EPS-DILUTED>                                      .19


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE RESTATED
CONSOLIDATED FINANCIAL STATEMENTS OF HARBINGER CORPORATION FOR THE SIX MONTHS
ENDED JUNE 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
CONSOLIDATED FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          67,477
<SECURITIES>                                    37,647
<RECEIVABLES>                                   31,660
<ALLOWANCES>                                     2,587
<INVENTORY>                                          0
<CURRENT-ASSETS>                               148,420
<PP&E>                                          39,309
<DEPRECIATION>                                  18,229
<TOTAL-ASSETS>                                 187,649
<CURRENT-LIABILITIES>                           47,998
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             4
<OTHER-SE>                                     139,647
<TOTAL-LIABILITY-AND-EQUITY>                   187,649
<SALES>                                         21,489
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