"How a Toy Whistle from Cap'n Crunch Cereal Hacked AT&T's Phone Network"

Описание: In the 1960s, a seemingly innocent toy whistle included in Cap'n Crunch cereal boxes became the key to one of the earliest phone hacks. This whistle emitted a 2600 Hz tone, the exact frequency used by AT&T to control its phone network. When discovered by phone phreakers, it unlocked a loophole that allowed them to make free long-distance calls.




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2600 Hz tone
phone phreaking history
AT&T phone network hack
blue box device
John Draper Captain Crunch
early hacking culture
1960s tech history
phone system loophole
Cap'n Crunch cereal toy