[comp.virus] Mac virus alert vendor product

rogers@marlin.nosc.mil (Rollo D. Rogers) (06/01/90)

Original-From: CAH0@bunny.gte.com (Chuck Hoffman)
Original-Newsgroups: comp.sys.mac,comp.sys.mac.programmer
Original-Subject: ALERT about VIRUS in vendor-distributed product
Original-Date: 31 May 90 18:30:43 GMT

   On May 25, I received the Diskworld diskette for May from Softdisk
Publishing in Shreveport, Louisiana.  I run Virex 2.6 (among others) which
intercepted the mount of the diskette and gave me a warning that the
diskette has a known strain of the WDEF virus.  Naturally, I chose the
"Eject" option of Virex, so the mount never was completed.

   WDEF is simple, but difficult.  Simple in that it lives in the
invisible desktop file of each disk or diskette.  So it can be eliminated
by rebuilding the desktop file by holding down the command and option keys
during the mount (or during startup, for an internal hard disk or SCSI).
Difficult for the same reason.  The gurus tell us that, if you are unaware
of the virus, by the time you see the diskette icon on your desktop
display, ALL the other disks (including internal and attached SCSI) will
already have been infected.  I did a controlled experiment of my own a few
months ago, and found that this was true.

   I called Softdisk Publishing to report my experience, and spoke with a
woman who said they already knew of the virus problem.  She suggested that
I simply reinsert the disk while holding down the command and option keys
to rebuild the desktop file, but I asked her to send me a clean copy of
the diskette instead.

   Lesson?  "Doesn't matter if the box is snazzy.  Use virus detectors to
protect your azzy."
- -Chuck

- - Chuck Hoffman, GTE Laboratories, Inc.
cah0@bunny.gte.com
Telephone (U.S.A.) 617-466-2131
GTE VoiceNet: 679-2131
GTE Telemail: C.HOFFMAN