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Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!houxm!ihnp4!inuxc!pur-ee!uiucdcs!trsvax!mikey
From: mikey@trsvax.UUCP
Newsgroups: net.micro
Subject: Re: Zenith-U.S. Government Contract
Message-ID: <53400043@trsvax.UUCP>
Date: Wed, 17-Oct-84 12:29:00 EDT
Article-I.D.: trsvax.53400043
Posted: Wed Oct 17 12:29:00 1984
Date-Received: Sun, 21-Oct-84 13:27:17 EDT
References: <3365@ecsvax.UUCP>
Lines: 13
Nf-ID: #R:ecsvax:-336500:trsvax:53400043:000:519
Nf-From: trsvax!mikey    Oct 17 11:29:00 1984



Tempest is is the designation for limits of radiation.  A few years ago
a government agency actually proved they could sit up to hundreds of
feet away from a computer and decode what was going on by monitoring
the EMI.  (Mostly because of the video and keyboard signals.)  
Tempest is supposed to limit this kind of eavesdropping on machines
that meet criteria in the Tempest specs.  Last I heard you can get
a Tempest proposal document but if you don't need the complete specs,
you don't get them.

Mikey at trsvax