PushDo Malware Returns with Domain Generation Algorithm

Four times since 2008, authorities and technology companies have taken the prolific PushDo malware and Cutwail spam botnet offline. Yet much like the Energizer Bunny, it keeps coming back for more. In early March, researchers at Damballa discovered a new version of the malware that had adopted a...

Watching a Botnet From the Inside

When you hear about botnets such as Rustock, Mariposa or Grum being taken down, one of the tactics that’s usually involved is sinkholing. The technique, which involves pointing the infected machines to a server controlled by good guys rather than attackers, often is used as one of the last steps ...

Researchers Confirm 600K-Strong Flashback Botnet Is Mostly Mac

Kaspersky Lab researchers say that analysis of the Flashfake botnet confirms the size of the malicious network and that it consists mostly of Mac OS X machines. Researchers at Kaspersky wrote on Friday that they were able to reverse engineer the domain generation algorithm used by the botnet, the...