Computer security
Subtitle: hackers penetrate DOD computer systems : statement of Jack L. Brock, Jr., Director, Government Information and Financial Management, Information Management and Technology Division, before the Subcommittee on Government Information and Regulation, Committee on Governmental Affairs, United States Senate.
Contributors: United States. General Accounting Office.
Series: Testimony -- GAO/T-IMTEC-92-5.
Publisher: U.S. General Accounting Office; [The Office, distributor
Published: 1991
Place of publication: Washington, D.C; [Gaithersburg, MD] (P.O. Box 6015, Gaithersburg 20877)
Language: eng
Format: Microform
Subjects: United States. -- Dept. of Defense -- Security measures.; Computers -- United States -- Access control.; Computer security -- United States.
Other titles: Hackers penetrate DOD computer systems.
Notes: Cover title.

Distributed to depository libraries in microfiche.

Shipping list no.: 92-1115-M.

"November 20, 1991."

Microfiche. [Washington, D.C. : U.S. General Accounting Office, 1992?] 1 microfiche : negative.