This wormable exploit did come into being and is known today as the Conficker worm. It has also been referred to as the Conficker virus, Downadup and Kido. Conficker became one of the fastest and largest worm infections since the Sasser infection of 2004. Conficker's logic includes mechanisms to generate lists of new domain names on a daily basis to seek out Internet rendezvous points that the authors use for updates and for command and control of the machines infected. Conficker also uses binary validation techniques to ensure that updates are signed by its authors. So far, Conficker infected machines have not been used for any nefarious purposes, but the viability of a botnet of thousands, perhaps millions of computers available for use by criminal's remains a possibility. Furthermore, Conficker blocks access to security related sites such as Symantec or McAfee, thus preventing users from downloading tools to remove the infection