CEOs of Facebook, Twitter, Google face new grilling by Congress

As malicious conspiracy theories continue to spread, lawmakers are pounding the social media companies over their market dominance, harvesting of user data and practices that some believe actually encourage the spread of engaging but potentially harmful misinformation.

Data on 267 million Facebook users exposed: Researcher

A Ukrainian security researcher reported finding a database with the names, phone numbers and unique user IDs of more than 267 million Facebook users - nearly all U.S.-based - on the open internet.