Online Threat Alerts (OTA) - Alerting you to scams and frauds.
Facebook Profile Viewer Scam Applications - Do Not Install

If you see fake Facebook Profile Viewers like the one, which claim they can show you who are stalking you or viewing your profile, do not install or follow their instructions. Facebook currently does not allow anyone to see who viewed their profile so, do not be fooled my these applications that promise this.

A Facebook Profile Viewer Scam

Profilespy Find Out Who Has Been Stalking You - Facebook Profile Viewer Scam