From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <101401c149b1$4db8cbc0$a2b9c6d4@SOMA>
From: "Boyd Roberts" <boyd@fr.inter.net>
To: <9fans@cse.psu.edu>
References: <200109301251.NAA16629@cthulhu.dircon.co.uk>
Subject: Re: [9fans] on the topic of viruses
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Date: Sun, 30 Sep 2001 15:10:39 +0200
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> On the subject of sneaky Unix hacks, it reminded me of a story
> that I think I first heard back in my student days the late 70s
> which I think was attributed to you Dennis...

it was ken.

> I have often wondered if it just urban legend, or is there a basis in fact?

it's all explained in _reflections on trusting trust_:

    http://www.acm.org/classics/sep95