Born 1972, better known by his pseudonym Phiber Optik, is a computer security hacker from New York City. Phiber Optik was once a member of the hacker Groups Legion of Doom and Masters of Deception. In 1994, he served a one-year prison sentence for conspiracy and unauthorized access to computer and telephone systems. Phiber Optik was a high-profile hacker in the early 1990s, appearing in The New York Times, Harper’s, Esquire, in debates and on television. Phiber Optik is an important figure in the 1995 non-fiction book Masters of Deception — The Gang that Ruled Cyberspace.