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From: SLINE@ITHACA.BITNET (Sliner)
Newsgroups: comp.virus
Subject: File reduction virus? (PC)
Message-ID: <0008.9102281544.AA01581@ubu.cert.sei.cmu.edu>
Date: 27 Feb 91 23:24:00 GMT
Sender: Virus Discussion List <VIRUS-L@LEHIIBM1>
Lines: 17
Approved: krvw@sei.cmu.edu


        I know viruses sometimes increase file lengths, but can a
virus decrease a file length?  The reason why I was asking was on a
bank of PCs in a lab, the ipx.com file was 26666, but on one machine
in the bank, the size was 25500, and the file had the correct date.
Another problem was that the machine was notreading the autoexec.bat
file when the computer was booted up.  I ran scan 72, but it did not
detect anything.

        Thanks in advance,
        Dan Sline

Bitnet:  Sline@Ithaca
Internet:Sline@Ithaca.bitnet

P.S. Could someone please post to list or e-mail me a message when the next
batch of scan programs from McAfee is available (I currently have V74B)?