Cambridge Analytica whistleblower Christopher Wylie: "You are the target" of companies like Facebook Data analyst Christopher Wylie exposed how Cambridge Analytica harvested information of millions of Facebook users during the 2016 campaign. Now he's out with a new book, "Mindf*ck: Cambridge Analytica and the Plot to Break America." Wylie spoke with CNET senior producer Dan Patterson and CBS News investigative reporter Graham Kates about the ongoing threats to social media users' privacy.