https://www.reuters.com/article/us-facebook-cambridge-analytica-whistleb/facebook-took-years-to-clamp-down-on-developers-data-harvesting-ex-operations-manager-idUSKBN1GX2RR

A former Facebook operations manager told a British parliamentary committee on Wednesday that data harvesting of member profiles by outside software developers was once routine and that the company took years to clamp down on the practice.