Managing user errors on Self-Register though communities
113181
Customize the Duplicate Username error message in a Community
26545
Stagefright security issue: what can a regular user do to mitigate the issue without a patch?
45300
How to prevent duplicate usernames when people register?
153253
Do community and moderator deletes penalize in the same way that self-deletes do?
137734
Why doesn't Stack Overflow require registration?
85575
How to prevent user registration
114068
Modifying the default user registration page
50843
Dealing with abusive user?
102000
Best way to defend against mysql injection and cross site scripting
129978
Learning Community Cloud
134414
How to deal with invalid, but still community-approved edits?
78490
Lightning component access in public community (no authentication)
126743
"Activity" tab for the Community user's network profile sometimes leads to a server error
94523
Firing Community Managers: Stack Exchange is not interested in cooperating with the community, is it?
112986
Validation / Dirty Flag: should we force users to fix invalid entries before they move to another screen in the software?
39294
What is a user-friendly way to log off other users?
34245
Handling harassing users?