A computational physicist who at just 30 years of age helped the U.S. federal authorities catch cracker Kevin D. Mitnick in 1995. At that time, frequent cracker Mitnick (who is now a computer security consultant and computer security book writer), was on the FBI’s Ten Most Wanted fugitives list. Following the capture of Mitnick, Shimomura wrote the book Takedown to describe the event, and in 2002, a movie of the same name was released. He is now a Senior Fellow at the San Diego Supercomputer Center. Schell, B.H., Dodge, J.L., with S.S. Moutsatsos. The Hacking of America: Who’s Doing It, Why, and How. Westport, CT: Quorum Books, 2002.