Some users of the popular Bitcointalk.org may have had their passwords captured thanks to a recent hack (or man-in-the-middle attack, as it’s put), according to an announcement banner on the forum’s page. The message as it appears:
News: If you used your password to login between 06:00 Dec 1 UTC and 20:00 Dec 2 UTC, then your password may have been captured in a man-in-the-middle attack, and you should change your password here and wherever else you used it. If you were only logged in via the “remember me” feature, then you’re OK.
It would appear as if the complexity of the user password was irrelevant in this case, as the bulletin notes simply that if a user’s password was used from December 1 to December 2, they should change it immediately.
Additional details are not clear at the moment, but it would appear as if Bitcointalk has managed to resolve the issue.