The Cambridge Analytica Whistle-Blower

Christopher Wylie testifies during a hearing before the Senate Judiciary Committee on Cambridge Analytica at Capitol Hill, Wednesday, May 16, 2018, in Washington.

Christopher Wylie, the whistleblower from inside Cambridge Analytica, and author of Mindf*ck: Cambridge Analytica and the Plot to Break America, talks about his new book, promising revelations about partisan data misuse.