Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles $Revision: 1.6.2.17 $; site trsvax.UUCP 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