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Article #5197

Re: WDEF A (Mac)

#5197
From: dplatt
Date: Sat, 10 Feb 1990 21:47
33 lines
2073 bytes
+ Today, while I was disinfecting a Macintosh IIx with Disinfectant 1.6
+ I got a report saying that the desktop was infected at 3:36 p.m. on
+ 2/6.
+
+ Now, it just happened that it WAS 3:36 p.m. while I was doing the
+ disinfecting...
+
+ Since the locked disk was clean, it couldn't have infected the HD,
+ right?  The person involved swears that no other disks had been in his
+ drives today.

The time-of-infection which Disinfectant reports is the "last modification
time" for the infected file.  This information is often useful when
you try to track down a virus which infects applications, since most
applications do not modify themselves when they are run... and hence
the "last modification time" of the application will often be the time
at which the virus infected the program.

However, the Desktop file is modified _very_ frequently by the
Finder...  it may be modified any time you launch a new application,
or drag an application from one disk/folder to another, or change any
file's Get Info... comments.  For this reason, the "last modification
time" on the Desktop file is _not_ a reliable indicator of when your
system was first infected.

BTW, there's no reason (as far as I know) to install Gatekeeper Aid on the
locked Disinfectant disk... as long as you keep the disk locked, no virus
will be able to infect it.
- --
Dave Platt                                             VOICE: (415) 493-8805
  UUCP: ...!{ames,apple,uunet}!coherent!dplatt   DOMAIN: dplatt@coherent.com
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  USNAIL: Coherent Thought Inc.  3350 West Bayshore #205  Palo Alto CA 94303
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From: dplatt@coherent.com
Newsgroups: comp.virus
Subject: Re: WDEF A (Mac)
Message-ID: <0005.9002121947.AA15751@ge.sei.cmu.edu>
Date: 10 Feb 90 21:47:41 GMT
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