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From: jbn@wdl1.UUCP
Newsgroups: net.unix-wizards
Subject: Re: Trojan horses
Message-ID: <863@wdl1.UUCP>
Date: Thu, 14-Nov-85 21:08:39 EST
Article-I.D.: wdl1.863
Posted: Thu Nov 14 21:08:39 1985
Date-Received: Sat, 23-Nov-85 00:10:36 EST
Sender: notes@wdl1.UUCP
Organization: Ford Aerospace, Western Development Laboratories
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Nf-ID: #R:brl-tgr:-311100:wdl1:64000031:000:599
Nf-From: wdl1!jbn    Nov 14 13:12:00 1985


       The term ``Trojan Horse'' is used by the computer security community
to indicate a device or program deliberately placed inside a security 
perimeter which, acting in concert with an attacker outside the security 
perimeter, allows a specific type of attack to be successful where it would
otherwise fail.  Note the use of the word ``deliberately''.  Gaps in security
occuring through error or ommission are not considered Trojan Horses.
       The term ``Trojan Horse'' is generally considered to come from Homer's
description of the siege of Troy in the Illiad, of course.

					John Nagle