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From: ms@pogo.ai.mit.edu (Morgan Schweers)
Newsgroups: comp.virus
Subject: Re: Virus questions (PC)
Message-ID: <0004.a9102111625.AA03009@ubu.cert.sei.cmu.edu>
Date: 9 Feb 91 05:34:50 GMT
Sender: Virus Discussion List <VIRUS-L@LEHIIBM1>
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Approved: krvw@sei.cmu.edu

Greetings,
    In regards to the question about viruses loading themselves
high...  No viruses as yet have the capability to place themselves
high in memory.  To understand why, look at it like this...  First you
would need a memory manager.  You can't assume that every system you
infect will have one, so you need to carry it around with you.  Then
you need a load-high routine (much less difficult).  For Some Reason
(tm) viruses don't successfully load high.  It may be due to the
oft-used technique of determining their own location and modifying
themselves thereby.  This may not be supported by the memory managers
I've tested viruses under.  I just recieved a new environment, and
will be testing to see if this is susceptible.

    If anyone has experience with a virus which successfully loaded
high, I would *VERY* much like to know!

                                                  --  Morgan Schweers

   P.S.  No, viruses do not infect non-executable code on PC's.
   P.P.S.  What sort of AI techniques were you thinking of?