https://www.siliconvalley.com/2019/09/20/facebook-says-it-has-suspended-tens-of-thousands-of-apps/

SAN FRANCISCO — Facebook said Friday that it has suspended “tens of thousands” of apps made by about 400 developers as part of an investigation following the Cambridge Analytica scandal.

Starting in March 2018, Facebook began looking into the apps that have access to its users’ data. The probe came after revelations that data mining firm Cambridge Analytica used ill-gotten data from millions of Facebook users through an app, then used the data to try to influence U.S. elections.