What did Gary mckinnon do?

Gary McKinnon is a British hacker who gained notoriety for breaking into U.S. military and NASA computer systems between 2001 and 2002. He claimed his motivation was to find evidence of UFOs and cover-ups related to extraterrestrial life. His hacking activities led to significant security concerns and strained U.S.-U.K. relations, resulting in a lengthy legal battle over his extradition to the United States, which was ultimately halted in 2012 on health grounds.