Re: Which single law was broken?
That information was linked in the article, but for this particular issue (emphasis added), just keep reading...
"California Attorney General Xavier Becerra and San Francisco District Attorney George Gascón today announced a $148 million nationwide settlement resolving allegations that Uber Technologies, Inc. (Uber) violated state data breach reporting and reasonable data security laws in connection with its 2016 breach of driver and customer data. Uber is accused of exposing 57 million users’ data and paying hackers to cover up the breach rather than reporting it to proper authorities. "
It doesn't stop there, of course. This page has a number of examples:
https://www.quora.com/What-are-all-the-laws-Uber-has-broken
More telling is that there is a Wikipedia page set up for this very topic:
https://en.wikipedia.org/wiki/Uber_protests_and_legal_actions