<PAGE>
EXHIBIT 23.3
CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
As independent public accountants, we hereby consent to the incorporation by
reference into The Titan Corporation's previously filed Registration
Statements (as amended, as applicable) File Numbers 33-4041, 33-9570,
33-12119, 33-15680, 33-37827, 33-56762, 33-65123, 33-83402, 333-07413,
333-10919, 333-10965, 333-30947, 333-57651, 333-66149, 333-47633, 333-66147,
333-67341, 333-68621, 333-90133, 333-90139, 333-35102 and 333-35274, of our
report dated November 12, 1999 related to the financial statements of
Advanced Communication Systems, Inc. (The "Company") for the fiscal year
ended September 30, 1999 included in The Titan Corporation's Form 8-K/A dated
April 17, 2000. It should be noted that we have not audited any financial
statements of the Company subsequent to September 30, 1999 or performed any
audit procedures subsequent to the date of our report.
/s/ ARTHUR ANDERSEN LLP
Vienna, Virginia
July 5, 2000
