[4484] in WWW Security List Archive
Re: ERM Surveillance Information
daemon@ATHENA.MIT.EDU (jwp@checfs1.ucsd.edu)
Wed Feb 19 01:17:36 1997
From: jwp@checfs1.ucsd.edu
Date: Tue, 18 Feb 1997 20:22:10 -0800
To: www-security@ns2.rutgers.edu
Errors-To: owner-www-security@ns2.rutgers.edu
> From: Matthew Petteys <matt@arcticmail.com>
>
> Does anyone have any information on a device that can be used to monitor
> the electro-magnetic radiation that a computer monitor emits.
Poke around in computer security on Yahoo for a while and you'll find
a company based in NYC (I think) that claims to be able to do this.
Personally, I doubt that it's possible in any significant sense.
I asked a friend who's been with Merdan Group for 20+ years about this
once. He was as vague as he usually is about things that might be work
related, or might have been at sometime in the past, or might be at
sometime in the future, but the general gist seemed to be that it wasn't
worth worrying about with modern computers and monitors.
It'd be fairly easy to check, really. The first thing of interest is,
under ideal conditions, how far away can you detect that the thing's
turned on and drawing on the screen? [If detectable emissions exist at
all, they'll come from the monitor.] Then you ask the same question
when looking through walls, with a number of monitors in the room, and
the fluorescent lights on, etc, etc. Good luck.
