Among the companies named in the report were Spotify and Netflix, whose arrangement with Facebook appears to be the most intrusive to a user's data privacy. The two companies were given the ability to read Facebook users' private messages. With the privilege, Spotify and Netflix could read, write and delete users' private messages, and see all participants on a thread.
Story: https://www.rappler.com/technology/news/219235-facebook-allowed-netflix-spotify-access-messages-data-sharing-partnerships
