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.

How phones can alert you to COVID-19 exposure

More than 8.1 million people in the U.S. have turned their iPhones and Android devices into pandemic contact-tracing tools, but it hasn't been of much use when their neighbors, classmates and coworkers aren't on the same system.  

DOJ to file antitrust lawsuit against Google

The Justice Department is expected to file a lawsuit Tuesday alleging that Google has been abusing its online dominance in online search to stifle competition and harm consumers.