The Wall Street Journal: Uber used secret tool ‘Greyball’ to sidestep authorities

Uber Technologies Inc. has for years employed a program that uses data from its ride-hailing app and other tools to evade government officials seeking to identify and block the service’s drivers, according to a person familiar with the matter.

The program, which Uber calls Greyball, was designed to prevent people from using the Uber app in violation of the terms of service, including law-enforcement sting operations and competitors attempting to disrupt Uber’s operations, this person said.

In a statement, Uber said it operated a program aimed at violators of its terms of service, the legal agreement required to begin using an app.

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