Whale Song Code
ID: 46b509af-c73b-5181-aace-d73e1dad9dac
STIX ID: report--46b509af-c73b-5181-aace-d73e1dad9dac
Feed Name: Schneier on Security
A historical note describes a Cold War U.S. Navy effort to create a covert communications system using whale, dolphin, sea lion, and seal recordings, decoded by a Combo Signal Recognizer. The project failed due to authenticity concerns and persistent background noise in animal recordings, which made repeated transmissions detectable and impractical.
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