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George Hotz, or GeoHot as he is commonly addressed in the hacking community, is best known for unlocking the iPhone and for publishing a "jailbreak" for Sony's PlayStation 3 gaming console.

Basically, Hotz purchased a Sony PlayStation and then found ways to hack into it - i.e.; 'jailbreak'. Later, he shared instructions and software tools on his website that helped other Sony PlayStation 3 owners modify their consoles to run unauthorized applications and pirated games. Hotz was accused by Sony of breaching the Digital Millennium Copyright Act and other laws