A person who gains unauthorized access to computers and computer networks.
one who works hard at boring tasks
a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers
someone who plays golf poorly
a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm; "true hackers subscribe to a code of ethics and look down upon crackers"
a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism
a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm
