Uber is facing a criminal investigation in Philadelphia over its regulation-skirting activity

Uber is under investigation in Philadelphia for Greyball, its software program that showed government officials a fake version of the Uber app to prevent them from monitoring Uber's use in cities where it was skirting regulations. 
The ride-hailing giant was already under investigation in Portland, Ore., for the same scheme. Uber's use of Greyball was first reported by the New York Times in early March. The software uses data to identify government officials who are using the Uber app to tr