VB Migration

Tag: grum

  • Grum botnet’s command-and-control servers shut down

    Spam-sending botnet believed to be third largest in the world. International co-operation between a number of parties has led to all command-and-control servers of the ‘Grum’ botnet being taken down. The takedown gives a good insight into how these operations work, and how co-operation is essential: During the weekend, two command-and-control servers, based in the…

  • 41% of spam sent via Rustock botnet

    Botnet spam back after short summer break. In its latest intelligence report, security firm MessageLabs reports that 41% of all spam is being sent through the Rustock botnet, an increase of 9% since April. The botnet sends an estimated 32 million spam emails per minute. Interestingly, the number of bots controlled by Rustock’s botherders has…