https://www.cnet.com/news/for-facebook-political-pressure-mounts-on-mark-zuckerberg/ >Mark Zuckerberg's name is ringing across Capitol Hill again, as politicians demand the Facebook founder testify to Congress in the wake of the social network's scandal with a data firm affiliated with the Donald Trump campaign. >Facebook on late Friday disclosed that researchers from UK-based Cambridge Analytica had duped the social networking giant and stolen access to data from more than 50 million Facebook users through an app called "thisisyourdigitallife," which was then used for political ads during the 2016 presidential election.