From: rslade@sfu.ca
Newsgroups: comp.virus
Subject: The Internet Worm (CVP)
Date: 25 Dec 92 08:15:35 GMT

HISVIRO.CVP   921215
 
                         The Internet Worm
 
By the fall of 1988, VIRUS-L had been established (let's hear it for
Ken!) and was very active.  Issues were, in fact, coming out on a
daily basis, so I was quite surprised when I didn't receive one on
November 3rd.  I didn't get one on November 4th, either.  It wasn't
until November 5th, actually, that I found out why.
 
Most machines on the net were not of the type that the Worm would
have affected.  The Worm was only able to run and propagate on
machine running the UNIX operating system, and then only those with
specific versions and specific CPUs.  However, given that the
machines that are connected to the Internet also comprise the
transport mechanism for the Internet, a "minority group" of
machines, thus affected, impacted the performance of the net as a
whole.
 
I learned it, initially, from a newspaper report.  However, by the
5th I was also starting to get mailings across the net again. 
During the run of the worm, a sufficient number of machines had been
affected that both email and distribution list mailings were
impaired.  Some mail was lost, either by mailers which could not
handle the large volumes that "backed up", or by mail queues being
dumped in an effort disinfect systems.
 
Most mail was not lost, but was substantially delayed.  The delay
could have been caused by a number, or combination of factors.  In
some cases mail would have been re-routed, via a possibly less
efficient path, after a certain time.  In other cases "backbone"
machines, affected by the Worm, were simply much slower at
processing mail.  In still others, mail routers would either crash
or be stopped, with a consequent delay in mail delivery. 
Ironically, electronic mail was the primary means that the various
parties attempting to deal with the worm were trying to use to
contact each other.
 
By Sunday, November 6th, things were pretty much back to normal. 
Mail was flowing, distribution lists and electronic "periodicals"
were running and the news was getting around.  The one difference
was the enormous volume of traffic given over to one topic: the
Internet Worm.
 
The Internet Worm is still the pre-eminent case of a viral program
in our time.  Even today, no "virus" story in the popular media is
complete without some reference to it.  It rates a mention in "The
Cuckoo's Egg".  Each school term brings fresh requests for
bibliographic material on it (sparked, one suspects, by either
choice or assignment of essay topics).  Currently (December of 1992)
there is a "thread" running on comp.security.misc on "Fun things to
do with RTM" which occupies about half the total bandwidth.
 
In many ways this fame (or infamy) is deserved: the Internet Worm is
the story of data security in miniature.  The Worm used "trusted"
links, password cracking, security "holes" in standard programs,
standard and default operations and, of course, the power of viral
replication.
 
copyright Robert M. Slade, 1992   HISVIRO.CVP   921215

==============
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Institute for  Robert_Slade@sfu.ca      |        Literacy:
Research into  rslade@cue.bc.ca         |   - There is no such thing
User           p1@CyberStore.ca         |     as "computer illiteracy";
Security       Canada V7K 2G6           |     only illiteracy itself.