They may ask you to "log in with your Facebook account" to authenticate, which is a phishing attempt to steal your password. The Risks of Using These Tools
If you’ve ever wondered who views your Facebook profile, you’re not alone. Curiosity about who is checking your photos, timeline, or relationship status is nearly universal. A quick Google search for "Facebook profile viewer online" returns dozens of websites, apps, and browser extensions all promising to reveal the secret list of your profile's lurkers. facebook profile viewer online
You can often see public Facebook Stories if the user has set their story privacy to 'Public'." Why "Viewers" Don't Work Privacy Architecture: They may ask you to "log in with
The promise is tantalizing. The reality, however, is entirely different. is entirely different.