: Facebook’s security architecture is robust. External websites cannot simply "unlock" a private profile. These tools often just show you cached data that was public in the past or use "View As" tricks that don't reveal private information. Legitimate Ways to Manage Privacy
Websites promising a "full download" of a private profile viewer claim they have found a backdoor or exploit in Facebook’s security system. They usually ask you to download an .exe file, an .apk file, or a browser extension. facebook private profile viewer download full
Historic loopholes, such as "View As Public" or URL manipulation, were addressed years ago by Meta's security teams 2. The Anatomy of a "Profile Viewer" Scam : Facebook’s security architecture is robust