What can I do about an exploitative user?
39477
"Accept for more help" extortion - is this common?
99122
What can moderators do about suspended chat users who attempt to engage with users via their chat profiles?
85575
How to prevent user registration
95312
Does Stack Exchange prevent cheating with "fake" accounts?
141840
How can I restrict program access to other users?
131817
How can I flag illegal reputation farming?
110172
What do I do if I believe a user to be operating a sock puppet account?
16055
Is someone trying to hack into my server? What can I do?
46422
How can I prevent spam on sites which I control?
62157
Website "theft" - what is the best way of dealing with these individuals?
11085
User was removed ... Ok, why am I getting punished for it?
16262
My website got hacked.. What should I do?
109993
What are some good ways to prevent people from copying my source code?
124123
How do I prevent identity spoofing in a multiplayer game?
18961
What checks are in place to prevent high rep users and mods from abusing their privileges?
11882
How can I protect my save data from casual hacking?
45973
Can I prevent/restrict standard users from installing/uninstalling software?