Method and apparatus for protecting a computer system from compu

Details Method and apparatus for protecting a computer system from compu Method and apparatus for protecting a computer system from compu

1993-10-22

1996-04-23

Black, Thomas G.

Cryptography

Key management

Having particular key generator

395700, 380 4, 371 671, G06F 1100

Patent

active

055111840

ABSTRACT:
An apparatus and method for protection against attack by computer virus. Detection and prevention of a virus attack at boot time is achieved by write-protecting the storage devices of the system before the booting process and by detecting the presence of virus by checking integrity of the interrupt vectors of the system. Similar checks may be run on the system modules, device drivers, and application programs, using, for example, a checksum to insure that no further viruses are present in those programs.

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Powis, "Progams to Fight Viruses", Tech PC User, vol. 1, No. 9, May 1989, pp. 31-33.

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