https://www.cnbc.com/2018/04/09/cambridge-analytica-whistleblower-facebook-data-could-be-stored-in-russia.html

The number of Facebook users affected by the recent data sharing scandal could exceed 87 million and records could be stored in Russia, Cambridge Analytica whistleblower Christopher Wylie said on Sunday.

Wylie said that Aleksandr Kogan, whose quiz app harvested the data of tens of millions of Facebook users, could have allowed that data to be stored in Russia. An organization run by Kogan, called Global Science Research (GSR), shared the data with controversial political data analytics firm Cambridge Analytica without their permission.