One of the most well known hacker and one of the earliest hackers was John Draper. He was the first person to make a long-distance call for free by using a whistle that came from a "Captain Crunch" cereal box. To make the long-distance call, he would blow into the whistle making a precise tone into the telephone, that then tells the phone system to open a line. John was arrested many times for phone tampering throughout the 70's.