Method and apparatus for detecting computer viruses through the use of a scan information cache
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United States of America Patent
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Jul 15, 1997
Issued Date -
N/A
app pub date -
Oct 4, 1993
filing date -
Mar 30, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus is provided for scanning files for computer viruses which use the length of at least one portion (such as a fork) of a file. This length information is stored in a cache. During a scan, the then current size of the file portion is compared to the length stored in the cache and if there is a size difference, the file is then scanned for viruses which can change that portion of the file's size.
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