What Does Facebook Immune System (FIS) Mean?

The Facebook Immune System (FIS) is the security infrastructure Facebook uses to detect spam and other cyber scams. FIS works by employing intelligent software to detect suspicious links and patterns of behavior on the social networking website. This software is overseen by a team of security professionals, but it can also learn and take action on its own. Although Facebook statistics show that the system is highly effective overall, scammers continue to find ways to circumvent these security tactics and get spam, scams and malware to Facebook users.

Techopedia Explains Facebook Immune System (FIS)

Because personal Facebook pages can carry a large amount of personal information, security on this hugely popular social networking site has always been a concern. Some of the scams the security issues that have emerged on Facebook include: