The latest in the round of virus’s is Polybot. At the time of writing (2pm on the 19th), Symantec have two patches – the Virus Definitions updated March 19th (which don’t actually exist if you try to download them, and the Virus Definitions dated March 24th. They can work out how to name a virus and how it spreads (via RPC vulnerabilitys that should have been patched) but no fix yet…..Thankfully we’ve not had any come through via email yet.