Facebook's Messenger App Is Tracking a Lot More of Your Data Than You Think

It should come as no surprise that most mobile apps run some sort of analytics on user behaviour. But in the case of Facebook, the social network’s Messenger app for iOS apparently tracks quite a bit more than most users likely realize. Some of this is expected behaviour for an app developer, of course. But of greater concern are the other things Zdziarski discovered, whose intended purpose is less clear.

“[Facebook is] using some private APIs I didn’t even know were available inside the sandbox to be able to pull out your WiFi SSID (which could be used to snoop on which WiFi networks you’re connected to) and are even tapping the process list for various information on the device,” he wrote in an email.

On Twitter, Zdziarski said he’s worked for companies that write enterprise surveillance software that didn’t know this level of access was possible.
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