John Draper and the 2600Hz Whistle
A toy whistle from a cereal box turned out to produce the exact frequency that could seize control of AT&T's long-distance network. John Draper, known as Captain Crunch, built an entire subculture on that discovery.
John Draper and the 2600Hz Whistle
Article draft pending. This piece will cover the full story of John Draper, from his Air Force service (where he first encountered telephone switching equipment) through his discovery that the Cap'n Crunch whistle produced a 2600Hz tone that could seize AT&T trunk lines. Sections will detail the technical specifics of how the whistle exploit worked within AT&T's in-band signaling system, Draper's development of more sophisticated blue box hardware, his role as the bridge between the counterculture and the emerging hacker scene, the Ron Rosenbaum Esquire article that brought phone phreaking to mainstream attention in 1971, Draper's multiple arrests and prison sentences (during one of which he reportedly taught fellow inmates how to phreak), his post-phreaking career as a programmer (including work on the Apple II), and the complicated legacy of a man who was both a genuine pioneer and a cautionary tale about the legal consequences of exploring systems you do not own.