A recent study by Privacy International found that 42.55% of Google Play's free apps share data with Facebook, and many popular apps share data with Facebook as it opens.
In the study, 61% of the apps the group tested automatically submitted data to Facebook as soon as the user opened the app, whether that person has a Facebook account or not on that account the device is logged on.  thumbnail of the article thumbnail "/>
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Some of these apps send detailed information to the social network that could be considered sensitive – for example, Kayak sends Facebook information about people's flight searches, including the point of departure, the date, and the airport, as well as where to go the flights should be how long they want to stay and how many people they are traveling in. There is also information about the type of ticket someone is looking for.
Other popular apps that were identified by the study are sending data Facebook: MyFitnessPal, Duolingo, Skyscanner, TripAdvisor, Spotify, Yelp, Shazam, and indeed.
Facebook reports that the problem has been you I have fixed a new version of the developer kit, but these apps do not need to implement it yet, or at least not implement it properly. Engadget reports.
The issue does not appear affect on iOS versions of apps.
You can view the full report here for free. In addition, detailed reports were created for all apps that immediately transfer data to Facebook when the app opens.
If you use one of these, you should know what information you share when you do so.