https://www.techradar.com/news/facebook-is-investigating-at-least-200-apps-that-might-have-misused-user-data

In March, following Facebook’s infamous data privacy scandal, CEO Mark Zuckerberg announced a full audit of all Facebook-connected apps. 

“We need to make sure that there aren't any other Cambridge Analyticas out there, or folks who have improperly accessed data," Zuckerberg said.