sir Timothy John "Tim" Berners-Lee

sir Timothy John "Tim" Berners-Lee, OM, KBE, FRS, FREng, FRSA, also known as "TimBL", is a British computer scientist and the inventor of the World Wide Web. 

Stephen Gary "Steve" Wozniak

Stephen Gary "Steve" Wozniak, known as Woz, is an American computer engineer and programmer who founded Apple Computer with Steve Jobs and Ronald Wayne. Wozniak single-handedly invented the Apple I computer and the Apple II computer in the 1970s.

Linus Benedict Torvalds

Linus Benedict Torvalds is a Finnish American software engineer and hacker, who was the principal force behind the development of the Linux kernel. He later became the chief architect of the Linux kernel, and now acts as the project's coordinator. 

Julian Paul Assange

Julian Paul Assange is an Australian editor, activist, publisher and journalist. He is best known as the editor-in-chief and founder of WikiLeaks, which publishes submissions of secret information, news.

Tsutomu Shimomura

Tsutomu Shimomura is an American scientist and computer security expert based in the United States, who became an instant celebrity when he, together with computer journalist John Markoff, tracked down and helped the FBI arrest hacker Kevin Mitnick.

Jonathan Joseph James

Jonathan Joseph James, a.k.a. c0mrade, was an American hacker who was the first juvenile incarcerated for cybercrime in the United States.

Albert Gonzalez

Albert Gonzalez is a computer hacker and computer criminal who is accused of masterminding the combined credit card theft and subsequent reselling of more than 170 million card and ATM numbers from 2005.

Kevin David Mitnick

Kevin David Mitnick is an American computer security consultant, author, convicted criminal, and hacker. In the late 20th century, he was convicted of various computer and communications-related crimes. 

Kevin Lee Poulsen

Kevin Lee Poulsen is an American former black hat hacker who is currently News Editor at Wired.com.

Gary McKinnon

Gary McKinnon is a Scottish systems administrator and hacker who was accused in 2002 of perpetrating the "biggest military computer hack of all time.