The Grum botnet has been knocked down. All the known command and control (CnC) servers are dead, leaving their zombies orphaned. How it all happened is a long story, but I would like to summarize it for you.
http://blog.fireeye.com/research/2012/07/grum-botnet-no-longer-safe-havens.html
My (editor) Comments :
1) Only C&C servers where shut down
2) The infected computers are still infected, so the network might recover.
3) It seems that the network is recovering
4) Still No help from eastern ISP’s dealing with cyber-crime
