So i recieved a message just now from a member of the tbcs steam group, cant remember what the message said exactly but it was along the lines of "your accound has been accessed by more then one ip, please click here and log in with your steam details so we can verify your ip address"
The user that sent the message is called "::" and the link the user sent was a .tk domain.
Now i know that its unlikely that any of the legit members of the group are uninformed enough to fall for a scam such as that, but i just thought i would warn everyone anyway.
It would also appear that because the group is public, there is no way to kick or ban the offending user.