Facebook announced this week that it had suffered its biggest hack ever, compromising the accounts of at least 50 million users. Part of the reason a Facebook hack is so scary is that the social network connects to so many other apps and services. You might use it to log in to Spotify or Tinder or OpenTable — a whole string of apps might have your information connected to your profile. So far, Facebook has said hackers did not access any third-party apps. But it's still investigating the scope of the hack. We dig into this in Quality Assurance, the segment where we take a deeper look at a big tech story. Molly Wood talks with Mike Isaac, a tech reporter for The New York Times who's been covering the story. (10/05/18)