A new government report is warning about a security vulnerability in MS Access. The report was posted December 10 and is just beginning to hit major blogs. I won't repeat the information here, since there's nothing you can really do to prevent it other than this — do not open any unsolicited e-mail attachments, even mdb (Access) files. You already know that though, right? If there's no reason for you to receive mdb files, go ahead and block them and avoid the potential threat altogether.