After chasing him for two years, the FBI has nabbed Kevin Mitnick -- America's most wanted computer hacker. Mitnick, 31, whose exploits formed a good part of the book Cyperpunk by Katie Hefner and John Markoff, was arrested in Raleigh, N.C. at 1:30 a.m. He was convicted in 1988 in Los Angeles for stealing computer programs and breaking into corporate networks and received a one-year sentence in that case. Since then, he has attacked other systems. The administrator of one of his targets, the San Diego Supercomputer Center (a federal computer nerve center) helped the feds track him down. Mitnick is charged, among other things, with fraud in connection with computers. "Mitnik's hacking skills are uncanny," says TIME technology editor Philip Elmer-DeWitt. "He's probably the most dangerous guy who ever sat down at a keyboard."