Troll usurps opponent's user name – What to do?
58992
Can we report / do anything about a persistent troll?
49447
How do I remove my name from a post, in accordance with CC BY-SA?
36469
Destroying a user should mark all pending flags against that user's comments as helpful
148072
Is it possible to find out reason of suspension for another user?
110172
What do I do if I believe a user to be operating a sock puppet account?
147029
Possibly offensive usernames
84516
Getting the real name of an user
155077
Suspended user shouldn't be able to run in an election on the site they're suspended on
34245
Handling harassing users?
30409
Prevent malicious bots from posting spam
18805
Ripping off answers from comments
14733
Auto-delete/destroy 1 rep user when their post is deleted as spam
99513
postfix - how to prevent users from sending with another users name
124123
How do I prevent identity spoofing in a multiplayer game?
105134
Why isn't the username obfuscated as one of the close-voters once the user is deleted?
146187
What to do when the OP mutilates their own question?
112477
How to deal with downvoting sock puppets?