In the late 1960s, a young boy discovered that the toy whistle included in Cap’n Crunch cereal produced a perfect 2600-hertz tone—the same frequency AT&T used internally to signal that a phone line was idle. This accidental discovery opened the door to “phreaking,” an early form of telephone hacking. By blowing the whistle into a phone, hackers could trick the system into granting free long-distance calls. This loophole eventually inspired a generation of early hackers, including future tech pio
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One Of The Earliest Hacks Was Performed Using A Cap'n Crunch Whistle Toy
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Early Hackers Used Whistles From Cap’n Crunch Cereal Boxes
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