1. The document discusses various types of computer crimes and computer criminals, ranging from novice hackers to organized crime rings.
2. Key cases of computer hacking and crimes are outlined, including the Morris worm of 1988, the hacking of Yahoo in 1997, and the hacking of Tsutomu Shimomura by Kevin Mitnick in 1995.
3. Computer crime statistics are presented, with estimates of annual losses ranging from $40-400 billion or more.