I caught it at my school so I am sharing the expierience and making sure I don't loose these tools. Step 1: Are you spreading the virus publicly. - here is an online check that can quickly let you know of you are publically spreading the virus: -- http://four.cs.uni-bonn.de/fileadmin/user_upload/werner/cfdetector/ -- if you are spreadding the virus, I suggest signing up for an OpenDNS account and point your network dns to it (hint use fowarders).