[comp.virus] Possibly Infected Commercial Virus Package!

GREVE@wharton.upenn.edu (Michael Greve) (09/14/90)

     Yesterday I discovered 2 different viruses on a commercial virus
   program we purchased.  The viruses were on the original, write
   protected diskette.  I accidently discovered with when I ran SCAN62
   on my hard disk.  One file is infected with the 1701/1704 virus and
   another file is infected with both the 1701/1704 (Cascade, I think)
   AND the AIDS virus.  When the infected program was used to check
   the original disk it found nothing.  When scan was run on the disk
   it picked up both virues.  So far these viruses are just located
   on 3 floppy disks and one hard drive.  Are these partiularly mean
   viruses??  How come the commercial program couldn't pick up the
   viruses that were on it's own disk??  Scan picked up the viruses.

    				Thanks for any assistance.

					Michael Greve
					Wharton Computing
					University of Pa.
					greve@wharton.upenn.edu