A black hat hacker is a person who attempts to find computer security vulnerabilities and exploit them for personal financial gain or other malicious reasons. Black hathackers break into secure networks to destroy, modify, or steal data, or to make the network unusable for those who are authorized to use the network. Here are some famous black hats.
Jonathan James was convicted and sent to prison for hacking in the United States–all while he was still a minor. At only fifteen years of age, he managed to hack into a number of networks, including those belonging to Bell South, Miami-Dade, the U.S. Department of Defense, and NASA.
Kevin Mitnick the U.S. Department of Justice called him the “most wanted computer criminal in U.S. history.”Hacking into the Digital Equipment Corporation’s network