Monthly Archives: May 2011

New attack vector in DDoS observed

  This article is a result of the common research of Jakub Alimov from the and minor from If you have anything to say about this, write to comments [a} zone-h{dot]org. The topic was presented at the SPI conference in Brno/CZ. While protecting the users from receiving a huge amount of the unsolicited bulk mail, a new attacking scenario against the DNS servers was observed. The scenario involves sending the spam messages to the SMTP services with a big bandwidth.