This morning I received what I believe to be three malicious emails from the forum.
They came in as an email notification to a subscribed thread, but the username wasn't recognized (I'm a newb, though) and the small amount of text did not make sense. There was an attached link next to the text.
I deleted them.
After looking at the forum, the threads the emails were associated with had no new responses and certainly not from the username I was given in the email. The emails looked quite on the up and up, though. Just like any other email notification to a new response.