This is the most common. You land on a slick landing page showing a fake loading bar that says "Bypassing Facebook encryption... 99% complete." Suddenly, it stops. A pop-up says: "Verification Required: Prove you are human." You are asked to complete a "simple survey"—enter your phone number for a free Netflix gift card, fill out a credit card offer, or download a specific app. You haven't accessed a profile. Instead, you have just sold your personal data (phone number, email, address) to affiliate marketers. The scammer makes $2 to $5 per survey completion.
Set your profile so that you must manually approve any photos or posts you are tagged in before they appear on your timeline. Conclusion anonymous facebook profile viewer