Around 100 app developers have gain access to users’ data from some groups including name and profile pictures. Social media management and video streaming apps have unauthorized access to these data.
We recently found that some apps retained access to group member information, like names and profile pictures in connection with group activity, from the Groups API, for longer than we intended. We have since removed their access.Konstantinos Papamiltiadis, Facebook
After Cambridge Analytica Data Leakage Scandal, Facebook limits the access of apps to the only group name, the number of members and posts by changing some group APIs and additional information can be gained by them only when users opt-in to share details.
Facebook mentioned in a blog post that some developers gain access even after API change longer than they intended and that is the sole reason behind data leakage. Facebook further mentioned that there is no report of abuse and it stopped all unauthorized access.
As we continue to work through this process, we expect to find more examples of where we can improve, either through our products or changing how data is accessed. We are committed to this work and supporting the people on our platform.Konstantinos Papamiltiadis, Facebook