The proof-of-concept threat is not spreading in the wild, and it only affects 64-bit Windows systems.
Symantec Security Response has revealed that it has analyzed the first 64-bit Windows attack code. The attack is a proof of concept with no payload. Named W64.Rugrat.3344 by Symantec, it’s very old-fashioned in technique. When executed it infects all 64-bit executable files, excluding .DLL files, in the directory from which it was executed, and all subdirectories, and then exits.
So Windows beta versions have virii already? Geez… -KingFish
Source: eWeek

Articles RSS