The feared Cryptolocker ransom Trojan has infected at least a quarter of a million PCs worldwide, a success rate probably generating somewhere in the low millions of dollars in ransom payments, a new analysis by Dell SecureWorks has estimated.
Symantec seizes part of massive peer-to-peer botnet ZeroAccess
The cyber-criminals behind ZeroAccess, one of the largest botnets in existence, have lost access to more than a quarter of the infected machines they controlled.