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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:16:05 ADT
William H. Geiger III (whgiii@invweb.net)
Wed, 18 Mar 98 20:34:08 -0500
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In <v04010c06b135c115e206@[192.187.167.52]>, on 03/18/98
at 11:28 AM, Dave Del Torto <ddt@LSD.com> said:
>At 07:36 am -0700 3/18/98, William H. Geiger III wrote:
>> [snip]
>>I *never* do any sensitive work on a network computer. I have a shielded
>>box that runs on battery power only (extra bonus points if you know why it
>>isn't connected to the local power grid). [...]
>Probably because of the recent proof (some of us saw it in operation at
>HIP'97) of a TEMPEST-type kit (from a German researcher whose name I'm
>forgetting just now) that reconstitutes screen images from any CRT on the
>power grid of a given building. Half-credit? ;)
>There's good reason to be concerned about this sort of surveillance, I
>agree. It's become trivially easy to do it, such that even an operative
>who's otherwise constitutionally restricted while on duty could hack
>something together in his/her spare time, just for "fun."
Has anyone done any research on transformers and wether they block 100% of
any data that may be leaked?
While the risk of data leakage through the local power loop has been known
for a long time it was commonly assumend that this data could not be
intercepted once you were past the first transfomer.
After reading about one of the power companies (the name excapes me right
now) finding a way to do network communications over the power grid I
started having second thoughts. Does anyone have any references on this?
Are they using some type of bypass on the transformers or have they found
a way to pass the data through them?
- --
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William H. Geiger III http://users.invweb.net/~whgiii
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OS/2 PGP 2.6.3a at: http://users.invweb.net/~whgiii/esecure.html
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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:16:05 ADT