Optical Tempest? I have my doubts...
Meyer Wolfsheim
wolf at priori.net
Thu Jul 17 13:33:28 PDT 2003
On Thu, 17 Jul 2003, Mike Rosing wrote:
> On Thu, 17 Jul 2003, Tyler Durden wrote:
>
> > The conspiracy theorist is telling me there's some reason they floated the
> > optical tempest story, though I can't quite figure out what that reason
> > is...
>
> The main purpose is for academic gain. If you'd looked at the paper a
> bit, you'd have read it took about 1/2 an hour to reconstruct the image
> from one screen. It is a proof of principle concept, enough so that
> multi-billion dollar espionage agencies can think about it. At 30 fps
> for a game, forget it. But for a slow typist who has to go get a cup
> of coffee because the phone rang....
>
> It does make the game more interesting, but it's mighty easy to defeat.
For what it's worth, a "secure viewer" that displayed text in red on a
black background should make an optical tempest attack much more
difficult.
-MW-
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