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Up to 75% of the internets spam has allegedly been shut down! McColo, a hosting provider allegedly responsible for up to 75% of the spam we receive was cut off by their upstream provider –

Thousands of pieces of spam were stopped in its tracks on Tuesday when a hosting site known for relaying spam was shut down. Reports indicate that all spam was reduced by as much as 50% within one day of the site’s demise.

San Jose, Calif.-based hosting site, McColo, was shut off by the site’s upstream provider. McColo is believed to be responsible for up to 75% of all spam email. Upstream provider Hurricane Electric shut off service to McColo at 9:00 a.m. on Tuesday.

It is speculated that spammers may now regroup in Eastern Europe according to Adam O’Donnell, who posted on the ZDNet Zero Day blog. A similar shutdown occurred in September when Intercage/Ativo was nixed by its upstream providers.

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