https://www.cnbc.com/2018/04/09/mark-zuckerberg-congressional-testimony-questions-to-ask.html >Mark Zuckerberg testifies before Congress this week in a pair of hearings on Facebook's user privacy policies and handling of the Cambridge Analytics data leak. >It's the first time before Congress for the founder and CEO and comes amid a firestorm of user concerns and government probes. The social media giant is facing questions after reports that research firm Cambridge Analytica improperly gained access to the personal information of as many as 87 million Facebook users.