Greyball: software built to deceive regulators
Uber built a tool called Greyball that tagged suspected city officials and enforcement officers, identified through signals like credit card data, phone models, and geofencing around government offices. Tagged users saw a fake version of the app with phantom cars or no cars, so they could not hail rides and gather evidence during sting operations in cities such as Portland. Its exposure in The New York Times in 2017 triggered a Department of Justice inquiry and became a central example of how the company treated the law as an obstacle to engineer around.