Uh-oh, it was bound to happen eventually:
If you run MT or host people who run MT, run, don't walk, to your box and disable the ms-send-entry.cgi. They don't verify that just a single email address has been submitted. Nor do they do any other basic security checks. And, guess what? Right. The spammers have discovered the hole.I'm patched...
[via Andy Baio]