PBEM file security question

[Mobhack]

Since its not something that I recall anyone mentioning before then its likely to be related to your AV product, is what I was saying. Best to check their support forums and see if its mentioned on there.

(.dat is a common extension used by programmers the world over for generic data files, but ISTR that some sort of video file format also uses the extension, and it may be treating it as if it were that?)