Mark Abene, better known by his pseudonym Phiber Optik, is a computer security hacker from New York City. He was once a member of the hacker groups Legion of Doom and Masters of Deception. He was a high-profile hacker in the early 1990s, appearing in The New York Times, Harper's, Esquire, in debates and on television. Mark was an important figure in the 1995 nonfiction book Masters of Deception - The Gang that Ruled Cyberspace. He is now a world renowned computer security expert and technical wizard who currently has several remarkable VoIP projects including a lifelike blue box simulator.