"Our performance review process also allows for high performers to engage in increasingly larger opportunities at our company, as well as for low performers to be transitioned out." Ard vehemently argued he was often given very positive personal performance reviews. A former Uber employee sued the ride-sharing company for age discrimination and whistleblower retaliation. He said he was wrongfully fired after he spoke out about Uber illegally deleting data that showed it was intensely tracking people. "Uber's lack of security regarding its customer data was resulting in Uber employees being able to track high profile politicians, celebrities, and even personal acquaintances of Uber employees, including ex-boyfriends/girlfriends, and ex-spouses," Ward Spangenberg, who worked as a forensic investigator for the ride-sharing service, wrote in a court declaration.