Facebook’s Latest Problem: It Can’t Track Where Much of the Data Went – WSJ

Facebook’s internal probe into potential misuse of user data is hitting fundamental roadblocks: The company can’t track where much of the data went after it left the platform or determine where it is now.
— Read on www.wsj.com/articles/facebooks-problem-it-doesnt-know-where-all-the-data-went-1530106200