"Self-confessed hacker Gary McKinnon has told UK prosecutors he will plead guilty to charges in the UK, a move that could help him avoid extradition to the US. Show related articles McKinnon has been accused by US prosecutors of "the biggest military hack of all time", after entering Nasa and Pentagon systems."
NASA Hacker May be Tried in UK, PC World
"While McKinnon says his exploits did not cause any damage, the U.S. allege that McKinnon stole 950 passwords and deleted files at a naval base in New Jersey, responsible for replenishing munitions and supplies for the Atlantic fleet. They also maintain the intrusions disrupted computer networks used by the military that were critical to operations conducted after the terrorist attacks of September 11, 2001. The U.S. estimates the damage caused by McKinnon at $700,000."