Facebook’s privacy architecture is server-side, meaning no local software can force the platform to display data that a user has restricted to "Friends Only". Attempts to use unauthorized third-party apps to harvest data often result in Facebook for violating their security policies. The Real Dangers of Downloading Hacking Tools
Many versions require you to "log in" with your own Facebook credentials to use the tool, which immediately hands your username and password to hackers. Facebook Profile Unlocker V5.0 Download
Some sites force users to complete endless surveys or pay a "product key" fee (often around $30) to unlock a password that the software never actually found. Why You Cannot "Unlock" a Private Profile Facebook’s privacy architecture is server-side