Some customers have contacted Sophos regarding the "Blankey.STCN" virus.
Investigation by Sophos researchers has determined that users are not
infected by a virus, but are receiving a false alarm from Norton Anti-Virus,
produced by Symantec.
Apparently the false alarm is caused when Norton Anti-Virus fails to update
properly, resulting in a mismatched set of files.
Sophos recommends users contact Symantec technical support for assistance.