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Technology Stocks : Network Associates (NET)
NET 82.21+0.2%Jul 12 4:00 PM EDT

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To: Tim Robbins who started this subject5/31/2001 10:12:11 PM
From: Ojing Eo  Read Replies (1) of 6021
 
Neta AV patent awarded (filed in 1998).
US6230288:
Method of treating whitespace during virus detection

Any of the inventors still work at NETA ?

delphion.com
biz.yahoo.com


A method is provided for detecting computer viruses that
infect text-based files. In accordance with a preferred
embodiment, a collection of virus signatures reflecting
sequences of characters or instructions known to be found
in such viruses is maintained on a computer system. A virus
detection program is also maintained for the purpose of
comparing the contents of computer files to the virus
signatures. Upon execution of the virus detection program,
whitespace within text-based files is transformed such that
each sequence of whitespace characters is replaced by a
single whitespace character. Virus signatures of viruses
known to infect text files are similarly transformed. A
transformed text-based file is then searched for at least
one of said virus signatures. The user is alerted to a
possible virus infection if any of the virus signatures are
found in a file. In another preferred embodiment, an
additional collection of at least one virus signature
containing sequences of characters or instructions known to
be found in viruses that infect executable computer files
is maintained on the computer system. A transformed text-
based file is searched for at least one of the additional
virus signature, which are not transformed before the
search.



Ojing
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