At 3:30PM UTC on 5th Sept a staff account was accessed and a mass mail was sent from within the forum software. The email sent wasn't dangerous, but it was a spam advertisement. The staff member did not have database access, and we are sure that no user data or actual email addresses were accessed, as such we will not be forcing a password reset.
If you received an unexpected email from ulmf.org, please delete it. We sincerely apologise for the inconvenience.