[EMAIL PROTECTED] wrote:
Interesting link, thanks. :)
Perhaps Van Eck was the first to research EMR eavesdropping of CRT
screens... ?
Nope:
Abstract: A system for preventing the remote detection and decoding of
computer data from RF or conducted signal emissions is disclosed. A simulator
is coupled to the computer for emulating signal emissions in order to mask the
computer signal emissions. The simulator includes an emulation generator
coupled to the computer to radiate signals that fully emulate those radiated by
the computer to be protected. The emulated signal emissions are synchronized
with the computer signal emissions by a special control unit which receives
timing instructions from the computer. A random sequence generator randomizes
and convolutes the sequence of the emulated signal emissions so that the
composite signal emissions formed by the computer and the simulator cannot be
decoded to render meaningful data indicative of that being processed by the
computer. The simulator is coupled with a computer to be protected by
connection to the I/O interface port of the computer.
US Patent References:
2476337 Jul., 1949 Varian.
Go to www.uspto.gov and do a patent search. You will see an image explaining
this from 1949. Wim Van Eck probably wasn't even in diapers then.
====================================================
J. Oquendo
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743
sil . infiltrated @ net http://www.infiltrated.net
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