Privacy International’s report identified five apps which shared data with Facebook. It focused on two apps in particular — Maya and MIA Fem — which the report said were sharing alarming amounts of detail.
Maya has over five million downloads on the Google Play Store, while MIA Fem has one million.
Both apps had Facebook’s Software Development Kit (SDK). SDK lets apps use certain features, for example allowing users to log in via Facebook, and helps the apps manage their data. In return, the apps feed data back to Facebook.
Even if you use and enjoy Facebook, using them as your login for third-party apps is an invitation for this kind of thing.