Earlier quoted context omitted.
"The lawsuit, filed in the U.S. District Court for the Northern District of California, alleges Uber broadly invaded the privacy of the Lyft drivers, specifically violated the California Invasion of Privacy Act and Federal Wiretap Act and engaged in unfair competition"
For completeness, the earlier article[1] also quoted a lawyer who listed other reasons various parties might take action: "breach of contract, unfair business practices, stealing trade secrets and violating the Computer Fraud and Abuse Act" [1] https://techcrunch.com/2017/04/12/hell-o-uber/
Not that I think it will be pursued criminally, as Uber has power & influence on its side to protect it from repercussions people like myself would face for doing the same exact thing. I wish that weren't the case though, we should all be equal in the eyes of the law.