#2 Robert Tappan Morris:

On November 2, 1988, Robert Morris released a worm that took down one-tenth of the Internet, crippling 6,000 plus computer systems. At that time he was a student at Cornell and from that where he started writing codes to create worms as he wanted to know how large the internet world is. But the worm lead to the slow speed of internet and made the systems no longer usable.

He was sent to 3 years imprisonment, 400 hours of community service and was fined $10,500. At present he is a professor at Massachusetts institute of technology, computer science and artificial intelligence laboratory. He was the first person prosecuted under the 1986 Computer Fraud and Abuse Act. It’s been a turn big turn around in his life, from a young computer prodigy to feared hacker, and now a professor at one of the most respected university.

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