Rise of Hackers - Meet Worlds 1st Hacker Ever (-:

Captain Crunch
A.K.A. John Draper, Captain Crunch became the idol of phreakers. His handle, another element of phreaking culture which would become common among future computer hackers, was derived from his use of a whistle found in Cap’n Crunch cereal which emitted a 2600-cycle tone.

Draper took phreaking to another level. The focus of his work was not attempting to obtain free phone calls, but rather to access and manipulate the computer system which lay behind the phone to place even more complex calls with each new attempt, sending calls around the world, bouncing them off satellites only to ask a passerby at Victoria station how the weather was that morning….

His legendary status has meant that Draper is often the focus of hacking attempts to this day.