You would think that if a free VPN were being offered to the masses, then safeguarding so many users\u2019 privacy would be a great thing. Except it is Facebook doing the offering, and the free VPN is designed to track everything a user does.U.S. Facebook users running the Facebook iOS app will see \u201cProtect\u201d in the navigation menu. Clicking on it takes users to Onavo Protect \u2013 VPN Security in the App Store. As was reported by TechCrunch, Facebook acquired Onavo Protect in 2013, but not so much for the security protections it offers as for its spyware-like features.Onavo claims to provide \u201cpeace of mind when you browse,\u201d an \u201cadded layer of security,\u201d and will \u201cwarn you when you visit potentially malicious or harmful sites.\u201dNo mention of protecting users privacyNote that there is no mention of protecting privacy, nor is there a mention of aiding in anonymity, things most people would expect from a virtual private network.Instead, after listing what it will provide, the Onavo app\u2019s description adds:To provide this layer of protection, Onavo uses a VPN to establish a secure connection to direct all of your network communications through Onavo\u2019s servers. As part of this process, Onavo collects your mobile data traffic. This helps us improve and operate the Onavo service by analyzing your use of websites, apps and data. Because we\u2019re part of Facebook, we also use this info to improve Facebook products and services, gain insights into the products and services people value, and build better experiences.There are so many red flags in that blurb that you hopefully didn\u2019t get whiplash if your head snapped back. But for people who really don\u2019t understand what protections a VPN should offer them, then Facebook\u2019s free VPN offer might sound good.Last year, the Wall Street Journal explained how Facebook was taking advantage of Onavo\u2019s monitoring to determine that its rival SnapChat was slowing down in user growth. That was possible because Onavo monitors users outside of the Facebook app; it is tracking users across all websites and apps.While there is an Android version of Onavo, Facebook currently only offers the \u201cProtect\u201d option to iOS users located in the U.S.Onavo Product Manager Erez Naveh told TechCrunch:We recently began letting people in the U.S. access Onavo Protect from the Facebook app on their iOS devices. Like other VPNs, it acts as a secure connection to protect people from potentially harmful sites. The app may collect your mobile data traffic to help us recognize tactics that bad actors use. Over time, this helps the tool work better for you and others. We let people know about this activity and other ways that Onavo uses and analyses data before they download it.Using a VPN is vitally important in this day and age, but using one that tracks you across all apps and sites is not at all wise. Then again, neither is using Facebook if you care about your privacy.If you are looking for a VPN, I suggest you take a look at \u201cthat one privacy guy\u2019s\u201d detailed VPN comparison chart.