someone who plays golf poorly 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
"true hackers subscribe to a code of ethics and look down upon crackers" one who works hard at boring tasks
Plethora.Net
Build-to-order computers: designs servers (LAN, Internet), high-performance workstations. Focus: Intel systems running most versions of Unix and related operating systems, especially NetBSD, FreeBSD, BSD/OS, Linux. http://www.plethora.net/