Pressure on Facebook has been mounting for weeks, after news broke that tens of millions of users of the social media site
had their personal information exploited in ways the company had not previously acknowledged. Tensions over Facebook's business and breaches of user privacy are the focus of our weekly series on economics, Making Sense. Facebook's crisis of confidence with both its users and lawmakers is deepening with new revelations. The social media giant said it now believes that up to 87 million people, mostly in the United States, had their data improperly shared with Cambridge Analytica, the British-based political consulting firm that worked for the Trump campaign and others. Facebook CEO and founder Mark Zuckerberg also admitted that outsiders likely accessed public profiles for most of the platform's two billion users at some point without explicit permission. It's certain to intensify scrutiny from Congress next week when Zuckerberg testifies.