1. UUCP is a service on a machine that can transfer files. In the olden days when connectivity was expensive, most machines were not connected together but where instead interconnected web of UUCP links. Machines would dialup peers and download/upload files on a scheduled basis. Most e-mail and USENET news were transported this way. E-mail addresses back in the 1980s consisted of long strings that specified each machine in the UUCP network. People held contests to see who could create the most convoluted route to send e-mail back to themselves over the long distance across the world. Key point: Even though it is rarely used today, uucp accounts and services are often enabled on UNIX machine in such a way that they can be exploited in order to break into the machine. See also: uuencode From Hacking-Lexicon