Uber facing criminal probe over Greyball: report

Ride-hailing company Uber said it will stop using its'Greyball' tool. The tool was used to prevent efforts by local authorities to catch the company violating local regulations. Uber is scaling back its expansion plans in Oakland, Calif. SAN FRANCISCO -- Uber could be facing a criminal probe by the Department of Justice into its use of a ghost-app program called Greyball, according to a Reuters report late Thursday. The controversial program allowed Uber engineers to take over a user's app and send them a map that did not accurately reflect which drivers were in the area.