Investigative Data Mining for Security and Criminal Detection

Local-area network—a computer communications system limited to no more than a few miles and using high-speed connections (2 to 100 mbps). A short-haul communications system that connects ADP devices in a building or group of buildings within a few square kilometers, including workstations, front-end processors, controllers, switches, and gateways.

Use of userid and password information obtained illicitly from one host to compromise another host. The act of Telneting through one or more hosts in order to preclude a trace (a standard cracker procedure).

A piece of e-mail containing live data intended to do malicious things to the recipient's machine or terminal. Under UNIX, a letterbomb can also try to get part of its contents interpreted as a shell command to the mailer. The results of this could range from silliness to denial of service.

Also known as a fork bomb—a resident computer program which, when executed, checks for a particular condition or particular state of the system that, when satisfied, triggers the perpetration of an unauthorized act