Leo Kuvayev

• abstract: Leonid Aleksandrovitch Kuvayev, (born 13 May 1972), who usually goes by the name of Leo, is a Russian/American spammerSpamhaus Profile believed to be the ringleader of one of the world's biggest spam gangs. In 2005, he and six business partners were fined $37 million as a result of a lawsuit brought by the Massachusetts attorney general.

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