The history of TEMPEST

One of my favorite topics has always been the history of cryptography – I don’t know why it fascinates me so. Cryptonomicon is my favorite novel for this very reason. So you can imagine how happy I was to read that the NSA has finally declassified the history of the TEMPEST project. Here’s a link to the story in the Threat Level column over at Wired. As if reading about the fact that we discovered readable electromag emissions from digital hardware a full ten years prior to when everyone thought we really did isn’t enough – it ends by dropping a hint about SEISMIC… which apparently is a project that allows signal interception thorugh seismic sensors. [GRIN]