Roger McNamee Has Gone From Mentoring Facebook CEO Mark Zuckerberg to Sounding the Alarm

Once a Facebook booster and early advisor to CEO Mark Zuckerberg, well-known tech investor Roger McNamee has changed his tune. Facebook is, in fact, a privacy train wreck, he says, and its leader appears to care more about growth than user privacy.

McNamee is so worried that he wrote a book, Zucked: Waking Up to the Facebook Catastrophe, that debuts on Tuesday. In the book, he details a laundry list of concerns about big tech companies like Facebook and Google, following their many data an...