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G. HANSSEN’S USE OF THE FBI AUTOMATED CASE SUPPORT SYSTEM
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161. The Automated Case Support System (ACS) is the FBI’s collected computerized databases of investigative files and indices. ACS came online in October 1995.
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The main, and most extensive ACS database, is the Electronic Case File (ECF), which contains electronic communications and certain other documents related to ongoing FBI investigations, programs, and issues, and the indices to those documents. It is the equivalent of a closed FBI intranet. ACS users can access individual files by making full-text search requests for particular words or terms.
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162. FBI personnel who are “approved users” of ACS, including HANSSEN, must log on with a user identification number and password unique to each user. Retrieval logs make it possible to conduct audits of individuals’ use of ACS.
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163. An audit of HANSSEN’s use of ACS shows that he has been a consistent user of ECF in particular, and that he periodically conducted searches of the ECF database using a wide variety of very specific search terms. Although some of HANSSEN’s ACS use appears to have been related to his official responsibilities, he made a substantial number of ACS searches apparently directly related to his own espionage activities. Through these searches, HANSSEN could retrieve certain FBI records that would indicate whether HANSSEN or his KGB/SVR associates, or their activities or operational locations, were
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87
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