https://www.cnet.com/news/uber-slapped-with-combined-1-2m-british-dutch-fines-for-2016-hack/

In October 2016, hackers stole names, emails and driver's license numbers of 57 million drivers and riders in multiple countries by breaching Uber's system. Uber paid $100,000 to the data thieves to delete the information, which didn't include Social Security numbers of US citizens or credit card information.

It impacted 2.7 million British and 174,000 Dutch riders and drivers, according to the two governments.