Detecting malicious alteration of stored computer files

Details Detecting malicious alteration of stored computer files Detecting malicious alteration of stored computer files

2006-05-09

2006-05-09

Moise, Emmanuel L. (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Security kernel or utility

C705S051000

Reexamination Certificate

active

07043634

ABSTRACT:
When a file is created on a computer, an archive copy of that file is also created and separately stored. Upon a subsequent access to the active copy of that file, a comparison between the active copy and the full archived copy is made to detect any changes. If there are not any changes, then the active copy of the file is assumed to be clean from malicious alteration and the access request is permitted. If an alteration has been made and is detected, then further countermeasures are triggered, such as full virus scanning of that file or blocking of its use. This archiving and comparison technique may be selectively applied to a subset of file types, such as executable files and dynamic link libraries, which are known to be infrequently modified during normal user operations.

REFERENCES:
patent: 5050212 (1991-09-01), Dyson
patent: 5287504 (1994-02-01), Carpenter et al.
patent: 5349655 (1994-09-01), Mann
patent: 5473815 (1995-12-01), Sonden et al.
patent: 5502815 (1996-03-01), Cozza
patent: 5649095 (1997-07-01), Cozza
Jamsa, “DOS: The Complete Reference” 3rdEdition, pp. 392-401, 406-407, xxiii.

Affiliated with

Also associated with

Rating

Detecting malicious alteration of stored computer files does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting malicious alteration of stored computer files, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting malicious alteration of stored computer files will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3565105