- Fascinating glimpse into history: 1972 NSA document describing how both our enemies and our allies were using EM emissions to remotely monitor our computers and communications equipment [pdf] http://www.nsa.gov/public_info/_files/cryptologic_spectrum/tempest.pdf 2 comments netsec
- Jeffrey Friedman, "TEMPEST: A Signal Problem," NSA Cryptologic Spectrum, Summer 1972. [PDF] http://www.nsa.gov/public_info/_files/cryptologic_spectrum/tempest.pdf 4 comments science