Re: tempest monitoring of key bit flips

jcaldwel@iquest.net
Thu, 18 Jun 1998 18:10:10 -0500 (EST)

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On 18-Jun-98 Simon R Knight wrote:
>> It does make good reading. However, I have a problem with the idea
>> of continual bit-flipping key bits. It seems like a tempest monitoring

> This sounds like an advanced kind of attack considering the degree of
> parasitic radiation within a PC, but is certainly an interesting

snip

>It would be fascinating to
> conduct some tests in this direction; one could practice by picking
> up the serial data transmissions from an ATM's card reader ! : )

For reference:

http://www.cl.cam.ac.uk/~mgk25/ih98-tempest.pdf

Take an AM radio up near one of those terminals while someone is entering their
pin. Whether the noise is decodable I have no idea.

> Simon

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