Hackers

Steve Wozniak
John Draper
Kevin Mitnick

Steve Wozniak is a computer engineer and a co founder of apple computers. He was one of the first hackers and established the base of these skills that are used all over the world today.

John Draper AKA "Captain Crunch"- captain crunch with the help of a blind friend helped Draper to figure out that if they could whistle into a phone at the same frequency that AT&T uses that they could hack the phone line and make free phone calls.

Kevin Mitnick- is a computer hacker and a convicted criminal in the United States because of his hacking. Mitnick was convicted in the late 90's of gaining access to computer networks and stealing intellectual property. He spent 5 years in prison.

Although at the time these three guys were "phone phreaks" they set the way for what is known today as hacking.