Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2000-01-14
2004-08-31
Barron, Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S187000
Reexamination Certificate
active
06785818
ABSTRACT:
TECHNICAL FIELD
This invention pertains to the field of thwarting attacks on digital computers caused by malicious computer code entering the computers via map-loaded modules.
BACKGROUND ART
Since this technical field is new, there are no known items of background art relevant to the problem solved by this invention.
DISCLOSURE OF INVENTION
The present invention is an apparatus, computer-implemented method, and computer-readable medium comprising a registry (
10
) containing mappings from generic map-loaded module names (
4
) to locations (
5
) of specific map-loaded modules (
8
). Coupled to the registry (
10
) is a registry monitor module (
20
) adapted to monitor attempts to replace existing mappings (
5
) of map-loaded modules (
8
) with replacement mappings (
5
). Coupled to the map-loaded modules (
8
) is a file system monitor module (
70
) adapted to monitor attempts to insert new map-loaded modules (
8
) into the computer (
1
). Coupled to the registry monitor module (
20
) and to the file system monitor module (
70
) is a programmable control module (
30
) adapted to determine that a change in mapping is deemed to constitute a malicious code attack when at least one pre-established rule (
50
) is satisfied.
REFERENCES:
patent: 5572590 (1996-11-01), Chess
patent: 5974549 (1999-10-01), Golan
patent: 6092194 (2000-07-01), Touboul
patent: 2002/0035693 (2002-03-01), Eyres et al.
patent: 2002/0073046 (2002-06-01), David
patent: 2002/0178375 (2002-11-01), Whittaker et al.
patent: 2002/0194488 (2002-12-01), Comack et al.
patent: 2003/0115458 (2003-06-01), Song
patent: 2003/0115479 (2003-06-01), Edwards et al.
patent: 0 636 977 (1995-02-01), None
patent: WO 93 25024 (1993-12-01), None
patent: WO 99 15966 (1999-04-01), None
Grawrock David
Sobel William E.
Barron Gilberto
Curcio James
Fenwick & West LLP
Symantec Corporation
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