«Protect» features a blue icon with a shield, and when you tap on it, it links to the Onavo VPN app in the iOS App Store.As TechCrunch points out, while Onavo offers to «
keep your
data safe while you browse» and let you know when you «visit potentially malicious or harmful websites,» Facebook's real aim with Onavo is tracking user activity
across multiple different apps to learn insights about how its customer base