A group of U.S. senators wrote a letter to Marissa Mayer, chief executive officer of Yahoo, on Tuesday about the hack on 500 million accounts in 2014. They ask what went wrong and how Yahoo plans to protect consumer data in the future. […]

Members of Congress are working to pass the Kelsey Smith Act, which would give law enforcement access to phone location data in some emergency situations, despite claims from privacy groups that the law could be abused.