SPAM

The term “spam” is internet slang that refers to unsolicited commercial email (UCE).

The first reported case of spam occurred in 1898, when the New York Times reported unsolicited messages circulating in association with an old swindle.

The term “spam” was coined in 1994, based on a now-legendary Monty Python’s Flying Circus sketch, where a crowd of Vikings sings progressively louder choruses of “SPAM! SPAM! SPAM!”

Fight Against SPAM

Huge list of https://en.wikipedia.org/wiki/Anti-spam_techniques

From common sense to Bayesian spam filtering.

Unfortunately it is a costly battle.

Percentage of SPAM in all of the email traffic