the Green Card spam
loreops culturesecurity
The April 1994 Usenet mass-posting by two immigration lawyers that made commercial spam a household problem.
Laurence Canter and Martha Siegel crossposted a 'Green Card Lottery' ad to thousands of Usenet newsgroups at once, ignoring every community norm of the pre-commercial Internet. The furious backlash, cancelbots, and press coverage that followed effectively founded anti-spam culture. Where the 1978 ARPANET message was a one-off, this was the moment spam became an industry.
In April 1994 two immigration lawyers posted an advertisement for green card lottery services to essentially every Usenet newsgroup simultaneously. It was not the first unsolicited commercial message on the network, but it was the first mass cross-posting, and it is generally treated as the moment spam became an industry rather than an incident.
What made it a turning point was the reaction and its failure. The community responded with the tools it had, which were social: outrage, complaint to the upstream provider, and eventually retaliatory floods. The senders were disconnected, obtained new access, and publicly reported that the campaign had been profitable. That last part is the whole story: a business model was demonstrated, and social disapproval was shown to be an insufficient control against one.
Everything downstream follows. Cancelbots, then filtering, then reputation systems, then authentication, then the concentration of mail into a few providers large enough to run all of it at scale. The 1978 DEC message began the argument about norms; the 1994 posting ended it, by proving that the economics did not care.