Do this from the official Facebook app or website. Use a strong, unique password. Enable immediately.
If a website claims they can bypass these privacy settings and show you private photos without an account, they are lying. They are using the same "verification scam" tactic described above. facebook profile viewer no account verified
Have you been targeted by a Facebook profile viewer scam? Share your story in the comments below (but don’t click any links!). The Truth About "Facebook Profile Viewer No Account
Websites and apps claiming to be "unverified" or "no account" viewers are almost universally fraudulent. They typically operate through several deceptive methods: Who views your Facebook profile | Facebook Help Center facebook profile viewer no account verified