1974: BBN opens Telenet, the first public packet data service (a commercial version of ARPANET)

1975: First ARPANET mailing list, MsgGroup, is created by Steve Walker. Einar Stefferud soon took over as moderator as the list was not automated at first. A science fiction list, SF-Lovers, was to become the most popular unofficial list in the early days.

1976: Elizabeth II, Queen of the United Kingdom sends out an email in February from the Royal Signals and Radar Establishment (RSRE) in Malvern

1979: Three grad students at Duke University, and at the University of North Carolina establish the first USENET newsgroups. Users from all over the world join these discussion groups to talk about the net, politics, religion and thousands of other subjects.

1980: The first ARPA virus.
MUD (Multi-User Dungeon)

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