The Daily

A young Canadian data expert came up with a plan to harvest people’s personal data from Facebook, and to use that information to influence their voting. How did the brains behind Cambridge Analytica become its whistle-blower? Guest: Matthew Rosenberg, a New York Times reporter in Washington. For more information on today’s episode, visit nytimes.com/thedaily. Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.