Sludge3000
Security researchers have disrupted the botnet known as Pushdo, a coup that over the past 48 hours has almost completely choked the torrent of junkmail from the once-prolific spam network.
Researchers from the security inteligence firm LastLine said that they identified a total of 30 servers used as Pushdo command and control channels and managed to get the plug pulled on 20 of them. As a result, the torrent of junkmail spewing from it dropped to almost zero on Thursday, according to figures from M86 Security Labs.
Story @ The Regsiter
As stated only 2/3 of the C&C servers were taken down so no doubt Pushdo/Cutwail will be back up and spamming relatively quickly.