At the peak of his hacking career Kevin penetrated and disrupted the top-secret research group of one of America's leading computer manufacturers. Pengo simply wanted to be the best "outlaw" hacker in the world but the German authorities took a dim view of his selling copied software to the Russians. Robert Harris wanted to test computer security but instead brought down America's most sensitive research and military computer networks. Using these three cases the authors society's vulnerability to electronic sabotage and set out to demonstrate that although mischievously innocent so far, hackers could become a real threat in the electronic age.