https://www.cnbc.com/2018/03/16/facebook-bans-cambridge-analytica.html

Facebook has suspended Cambridge Analytica, a political data analytics firm that worked on Facebook ads for President Donald Trump during the 2016 presidential election, saying that it lied about deleting user data sent to it by the makers of a popular psychology test app.

In a blog post, Facebook explained that a University of Cambridge psychology professor, Dr. Aleksandr Kogan, created an app called "thisisyourdigitallife," which asked users to answer questions to build a psychological profile.