Venerable Rustock Botnet Is Spamming Again

Rustock, one of the oldest and most prolific botnets in Web history, is at it again.

According to a blog by NetWitness researcher Alex Cox, Rustock is spouting spam again after a brief respite in 2010.

"Sometime this morning, Rustock begain spamming again, pushing Viagra from shady .ru sites," Cox writes. The botnet is primarily carrying spam messages that simply say "click here," he says. Those who fall for the phish are taken to a Canadian pharmacy site to buy Viagra, he says.

"There's no telling if this will be continued activity, but it appears to be business as usual for the Rustock operators," Cox writes.

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