Massachusetts Attorney General Maura Healey said her office has launched an investigation into an Uber hack that exposed the data of more than 57 million users and drivers.
"We've launched an investigation into the Uber breach and have been in touch with the company to get more information," she said in a tweet on Wednesday. "We have serious concerns about the reported conduct."
She also told WGBH-FM she had requested documents and other information from the ride-hailing service, adding that her office is "keeping all criminal and civil options on the table."
Massachusetts isn't the only New England state looking into the Uber breach. The attorney generals in Connecticut and New Hampshire have also launched their own investigations.
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Uber came clean Tuesday about its cover-up of a year-old hacking attack that stole personal information about its customers and drivers. So far, there's no evidence that the data has been misused, the company's new CEO said.
The heist took the names, email addresses and mobile phone numbers of 57 million riders around the world. The thieves also nabbed the driver's license numbers of 600,000 Uber drivers in the U.S.
The revelation was the latest stain on Uber's reputation. The California company ousted Travis Kalanick as CEO in June after an internal investigation concluded he had built a culture that allowed female workers to be sexually harassed and encouraged employees to push legal limits.
It's also the latest major breach involving a prominent company that didn't notify the people that could potentially be harmed for months or even years after the break-in occurred.