Legitimate Facebook tools use Facebook's official API and OAuth authentication, which never requires you to enter your password on external sites. If a website asks for your Facebook username and password directly, it's almost certainly a phishing attempt.
Since you cannot see who is viewing your profile, the best strategy is to control what they can see. facebook anonymous viewer profile
Facebook is explicit in its policy: it provide a way for users to track who views their profile. Any third-party app or website claiming to offer a list of "profile stalkers" is generally considered a security risk or a scam. Facebook actively encourages users to report such applications as they cannot provide this functionality. 2. Methods of "Anonymous" Viewing Legitimate Facebook tools use Facebook's official API and
Your identity is not hidden from the group's administrators or Facebook's internal systems. Facebook is explicit in its policy: it provide
Any public posts you shared in the past automatically change to "Friends Only." Step 3: Limit Past Posts