The teen who famously turned down a $5,000 offer to stop tracking Elon Musk’s private jet said he stopped sharing data on Mark Cuban’s travel history on Twitter after the billionaire reached out with privacy concerns. Over the course of about four months, Cuban and Jack Sweeney, 19, went back and forth over the account @MCubansJets, which followed several of the “Shark Tank” star’s planes. The deal between the teen and billionaire sheds light on the daily privacy concerns of public figures like Cuban and the lengths they’re willing to go to limit their exposure.