https://techcrunch.com/2017/11/21/uber-data-breach-from-2016-affected-57-million-riders-and-drivers/

Uber faced a data breach in 2016 that affected some 57 million customers, including both riders and drivers, revealing their names, email address and phone numbers. That affected group included 50 million riders and 7 million drivers; around 600,000 driver license numbers for U.S. drivers were also included in the breach, according to a new report from Bloomberg.

Uber did not report the incident to regulators or to affected customers, but instead paid $100,000 to “hackers” to get rid of the data in order to keep the breach under wraps, according to the report. It says further that no security numbers or trip location information was taken in the attack, and that it doesn’t believe the info that was leaked was ever used, though it doesn’t specify who was responsible.