Major Android mobile apps from companies including Yelp and Duolingo send data that could be used to personally identify you for ad tracking straight to Facebook immediately upon logging in, according to a new report from the London-based UK charity and watchdog group Privacy International (PI). This data transfer happens even if a user isn’t logged into Facebook on that device and even in the event the user doesn’t have an active Facebook account at all.
In addition to Yelp and Duolingo, PI found that two Muslim prayer apps, as well as a bible app and a job search app called Indeed, also sent similar data to Facebook that could be used to help identify users for ad targeting purposes when they browse the social network. It’s not clear…
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