We are having a problem with attackers taking over wiki accounts with privileged user rights (for example, admins, bureaucrats, oversighters, checkusers). It appears that this may be because of weak or reused passwords.
Community members are working along with members of multiple teams at the Foundation to address this issue.
In the meantime, we ask that everyone takes a look at the passwords they have chosen for their wiki accounts. If you know that you've chosen a weak password, or if you've chosen a password that you are using somewhere else, please change those passwords.
Select strong passwords -- eight or more characters long, and containing letters, numbers, and punctuation.