It seems that Ed's Hack Quiz may have become exceptionally useful in light of a new virus/class of virus. It seems that what Sophos is calling "Trojan.Ransom.A" locks the console so that the system can only be accessed remotely. Check out http://www.sophos.com/virusinfo/analyse ... nsoma.html.
Seems that the empire really IS hacking back...
What do you know... educational and fun!