One of the bigger stories from Mike Isaac's Travis Kalanick profile had nothing to do with Uber at all. The relevant text:
With Mr. Kalanick setting the tone at Uber, employees acted to ensure the ride-hailing service would win no matter what. They spent much of their energy one-upping rivals like Lyft. Uber devoted teams to so-called competitive intelligence, purchasing data from an analytics service called Slice Intelligence. Using an email digest service it owns named Unroll.me, Slice collected its customers’ emailed Lyft receipts from their inboxes and sold the anonymized data to Uber. Uber used the data as a proxy for the health of Lyft’s business. (Lyft, too, operates a competitive intelligence team.)
Reactions to this have ranged wildly, from the paranoiac to the flatly cynical:
You should probably delete your Gmail and Facebook and Twitter accounts too while you are at it. https://t.co/3aQZoOZ86D— Fareed Mosavat (@far33d) April 23, 2017
I worked for a company that nearly acquired unroll.me. At the time, which was over three years ago, they had kept a copy of every single email of yours that you sent or received while a part of their service. Those emails were kept in a series of poorly secured S3 buckets. A large part of Slice buying unroll.me was for access to those email archives. Specifically, they wanted to look for keyword trends and for receipts from online purchases.