A new, detailed analysis of the operations of the infamous Cutwail/Pushdo botnet shows that the network is incredibly prolific, with one section of the botnet sending more than 1.7 trillion spam messages. The botnet is quite profitable, generating as much as $4 million in profits for its owners, the researchers say. Researchers from The Last Line of Defense, the University of California at Santa Barbara and the Ruhr-University Bochum in Germany got access to 13 C&C servers they had access to last summer.
Source: https://threatpost.com/new-analysis-shows-pushdo-botnet-sent-trillions-spam-emails-generated-millions-profits-031511/75031/