She further stated that the current Facebook application permissions put billions of users at risk of not knowing. Even if a user is playing a game, reading the Facebook news, or doing a quiz, he or she may be given a cover by a third party.
She said “Facebook’s current app permissions leave billions of its users vulnerable without knowing it. If you play games, read news or take quizzes on Facebook, chances are you are doing those activities through third-party apps and not through Facebook itself. The default permissions that Facebook gives to those third parties currently include data from your education and work, current city and posts on your timeline”
With the default permissions, Facebook will provide third-party information such as the user’s education and work, his city, and posting timeline.
Previously, Facebook had been bombarded with multiple attacks because it was involved in “Cambridge Analytica” stealing 50 million of user data and being used by political activities.
Source: CNET