Microsoft said the botmasters behind ZeroAccess have abandoned the peer-to-peer botnet less than a month after Microsoft and law enforcement disrupted its click-fraud operation. Microsoft is declaring ...

A mid-year switch in communication protocol and distribution strategy is behind a spike in activity from the ZeroAccess botnet, a prolific and malicious ad click fraud network. A mid-year switch in ...

It's botnet-takedown time again: Symantec has intercepted and redirected more than a half-million machines infected by the pervasive click-fraud botnet ZeroAccess, one of the world's largest botnets.