Baddest botnets of 2012

According to security firm Kindsight, these are the Top Ten Worst Botnets this year.

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Festi is one of the world’s largest spam botnets. It’s distributed as an executable Trojan and infects older versions of Windows operating systems. After the takedown of the Grum spambot, Festi surged to infect at least 250,000 unique IP addresses.

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