Once you install the extension (available for Chrome, Edge, and Firefox), a small shield icon appears in your browser toolbar. When you log into Facebook, you can run the Privacy Scan.
The most common threat on Facebook isn't a traditional virus that infects your hard drive; it is social engineering. Scammers use "clickbait" videos ("You won't believe what this celebrity did!") to trigger "like-jacking" scripts or redirect users to phishing sites. mcafee antivirus for facebook better