Top 10 Notorious computer hackers of all time

H - Hide IP
A - Aim Victim
C - Crack Encrypt
K - Kill Firewall
E - Enter into Database
R - Return Anonymous

10. Mark Abene

Mark Abene was a member of a hacking group known as the Legion of Doom and later a Masters of Deception. He and his Hacking group sought to understand how early mainframe systems operated and hacked into various telecommunication.
Now Mark Abene is an Infosys expert and Entrepreneur.

9. Michael Calce

Michael Calce is known as MafiaBoy, one of the most popular notorious computer hacker. Michael Calce was only 15 years old when he shut down a popular website like CNN, DELL, Amazon, E*Trade, yahoo and eBay for several hours with the help of Denial-of-Service attacks. He was sentenced to eight months of open custody, a year of probation and a small fine, Michael Calce now works as a "white-hat hacker" to help companies with online security.

8. Robert Tappan Morris -

Robert Tappan Morris is an American Computer Scientist and Entrepreneur, best know for creating the first Morris Worm in 1988 the worm effect 6,000 Unix machines and causing millions of dollars in damage. Morris was eventually caught, three years of probation and ordered to pay a $10,000 fine.

7. George Hotz -

George Francis Hotz the 24-year old New Jersey-born Hacker is best known for unlocked the first Sony's PlayStation 3 and Apple's iPhone, he was 17 years old when he hacks iPhone [2005]. he also releases multiple jailbreaks including "purplera1n" for the iPhone 3GS. He has also worked with Facebook, Google Hotz say he still hack because he's "bored"
Google has paid him $150,000 for finding the security vulnerability of the Google Chrome browser.

6. Albert Gonzalez

Albert Gonzalez is an American notorious computer hacker and computer criminal. Albert Gonzalez was the mastermind behind the biggest ATM and Credit card theft in history. The crime is believed to be the largest retail-store theft in U.S history. Albert Gonzalez and his group had allegedly sold more than 170 million cards and ATM numbers from 2005 to 2007. When Albert Gonzalez was arrested, authorities seized $1.6 million in cash the biggest such fraud in history.

Top 10 Certified Ethical Hackers In India

5. Jonathan James

Jonathan James is a 16-year old American black hat hacker. He was the first Juvenile to be sent to prison for hacking. At the age of 15 [in 1999], he damaged NASA Systems and the Department of Defense, which caused them $41,000 to fix the system. Jonathan James steals software from NASA, which worth over $1.7 million. Other than that, he hacked into the Defense Threat Reduction Agency.
On May 18, 2008, at the age of 25, James committed suicide using a gun.

4.Gary Mckinnon

Gary Mckinnon was born on 10 February 1996 is a Scottish System administrator and computer hacker. Gary McKinnon hacked the US Department of Defense, Navy, Army, Air Force and NASA computer. According to U.S authorities, he deleted several critical files, rendering over 300 computer inoperable, U.S claim that McKinnon's hack job cost them 700,000 to fix. McKinnon also posted a notice on the Military's website - "your security is Crap". The reason why he tried to hack into the US military and NASA computer is McKinnon believes the U.S government was hiding alien technology that could solve the global energy crisis.

3. Adrian Lamo

Nicknamed - the Homeless hacker Adrian Lamo was born on February 20, 1981, is an American thread analyst and grey hat hacker.
Adrian Lamo is known for hacking the computer networks of Microsoft, Yahoo, New York Times and MCI WorldCom, where he inserted his contact info into their database of the expert. Lamo Served 2 years probation and now Adrian Lamo is currently working as a tech Journalist.
Adrian Lamo - Wikipedia
Adrain Lamo - twitter.com/6

2. Kevin Poulsen

Kevin Poulsen is a senior editor at tech-savvy Wired magazine, but back in the 80s, he was a notorious computer hacker, he hacks into the phone lines of a Radio station that allow him to be the 102nd caller(phone-Phreaking), which made him winning a brand new Porsche 944, among another prize. Kevin Poulsen also tried to hack the FBI (Federal Bureau of Investigation) database in 1991, but somehow he gets arrested and went to prison for 5 years.
Kevin Poulsen - Wikipedia

1. Kevin Mitnick

Kevin David Mitnick was born on August 6,1963 is an American computer security Consultant, hacker and Author. Kevin Mitnick was declared as the "Most Wanted computer Criminal in U.S History " Kevin Mitnick has damaged Communication Networks like Motorola, Nokia and Sun Microsystem etc. He has also damaged DEC System (Digital Equipment Corporation ) networks to steal their networks. Kevin Mitnick was Jailed twice for his crimes, once in 1998 and then again from 1995 to 2000. He is the author of two Books The Art of Deception - Controlling the Human Element of Security and The Art of Intrusion -The Real Stories Behind the Exploits of Hackers, Intruders and Deceivers. Kevin Mitnick does not like being called a hacker, he instead claims to be a Social Engineer.
Kevin Mitnick is one of the notorious computer hackers of all time
Kevin Mitnick - Wikipedia

Other Notorious computer hackers of all time

Richard Stallman
Vladimir Levi
David Smith

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Top 10 Notorious computer hackers of all time