While hacking tools are fake, there are legitimate, albeit old-school, ways to see content on a private profile. However, they require social interaction, not software.
These sites ask you to complete surveys or download apps to "unlock" the profile. In reality, they are earning affiliate commissions while you never see the promised content. Malware and Viruses:
Facebook does not have a "backdoor" or secret URL system for private profiles. Legitimate privacy settings ensure that: