Declassified NSA document reveals the secret history of TEMPEST

Wednesday, 30 April 2008, 8:37 PM EST

It was 1943, and an engineer with Bell Telephone was working on one of the U.S. government's most sensitive and important pieces of wartime machinery, a Bell Telephone model 131-B2. It was a top secret encrypted teletype terminal used by the Army and Navy to transmit wartime communications that could defy German and Japanese cryptanalysis.

Then he noticed something odd.

At Wired.

[ Read more ]




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