TEMPEST protection (was Rolm Computers: 1602, 1602A, 1602B, 1666, MSExx)

Noel Chiappa jnc at mercury.lcs.mit.edu
Thu May 5 08:17:53 CDT 2016

    > From: Erik Baigar

    > very interesting reading

If you want to see a great example of why it was important, check out the
so-called 'Berlin Tunnel':


Some of the traffic that was intercepted was teletype traffic - which had
been encrypted. However, the equipment that connected the gear to the line
allowed a tiny electronic whisper of the original plain-text onto the line,
along with the encrypted form, and it was possible to read the plaintext off
the line with suitable gear.


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