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Huge botnet advances on humanity wielding deadly SPAM

An already large botnet appears to be growing at an alarming rate - having expanded by 100,000 machines in the last month.

Kraken - the malware that infects the victims' PCs - is similar to the Storm Trojan and relies on users clicking on a file expecting to see an image - except it isn't one. It also uses encrypted communications and can move command and control functionality around the botnet if needed. Quite robust then.

Researchers at Damballa Inc., a security vendor have been tracking the Kraken botnet and as you might guess its main purpose seems to be the propagation of massive amounts of spam - in some cases a single PC sending as many as 500,000 spam messages in a single day.

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