ARC, the data broker owned by the country’s major airlines, has been selling domestic flight data in the US to Customs and Border Protection. But in the contract, they told CBP not to reveal where the data was from… why? 

Guest: Joseph Cox, co-founder of 404 Media and the co-host of the 404 Media Podcast. 

Want more What Next TBD? Subscribe to Slate Plus to access ad-free listening to the whole What Next family and all your favorite Slate podcasts. Subscribe today on Apple Podcasts by clicking “Try Free” at the top of our show page. Sign up now at slate.com/whatnextplus to get access wherever you listen.

Learn more about your ad choices. Visit megaphone.fm/adchoices