full-disclosure - Re: Tempest today

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Date: Mon, 21 Aug 2006 16:45:54 -0400
From: Valdis.Kletnieks@...edu
To: Bryan_McAninch@...fee.com
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Tempest today

On Mon, 21 Aug 2006 13:21:19 CDT, Bryan_McAninch@...fee.com said:
> 
> Thanks, but I don't quite see the relevance in regards to CRT-based EMR
> eavesdropping. The title of the patent application (#2476337) is "Secret
> Radio Communication"; 

However, the abstract is eminently citable to back the theory that in 1949,
engineers understood that signal leakage could be monitored, because somebody
saw a need to defend against it.

The fact that the patent only addresses computers probably has to do with
how the video console for the PDP-1 that got used for SpaceWars was still
some 15 years in the future. :)

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