Restrict access to people.aspx page
44318
SharePoint People.aspx Page is Visible for All Users
30157
How do I hide a particular user from the login screen?
142814
How do you remove the ability for a user to make a comment or post on a page?
136289
External Users access and Block IP range for Internet facing site for SP Online and AZURE (On-Prem)
45016
Allow registered users to hide username when asking privacy-sensitive question
6297
Grant external users access to sharepoint external facing site
39060
Classic ASP SQL Injection Protection
94301
Using crawl rules to exclude Allitems.aspx, DispForm.aspx
79178
Allowing users to edit only their page and nobody else's
44429
Restrict Admin Capabilities in MultiSite
125358
Content type permission to specific users
56949
Want to prevent a user to access other user cases
59358
Grant Anonymous access on SharePoint 2013 site
122435
Permission Settings: Anonymous Users
114068
Modifying the default user registration page
89137
Password protecting a page
124766
How to apply security on a folder using web.config file?