When a user restricts their account visibility via the Facebook Settings & Privacy menu , that data constraint happens on Facebook's master servers. When an external application requests that data, the server checks if you are authorized (e.g., if you are approved friends). If you are not, the server completely blocks the data transmission. 2. The Truth About "iStaunch" and Similar Sites
Most "private viewers" do not actually bypass Facebook's core security. Instead, they may only show publicly indexed data, such as a full-size version of a profile picture that is already partially visible. They cannot "unlock" hidden posts, private friend lists, or stories that have been restricted to "Friends Only". Critical Safety and Security Risks facebook private profile viewer by istaunch free
: Facebook processes user data on closed, highly secure servers. No client-side tool can force Facebook's database to serve data restricted by user privacy settings. When a user restricts their account visibility via
