T-Mobile says data on 40 million people stolen by hackers

Pedestrians walk past a T-Mobile store in New York, U.S., April 27, 2018. REUTERS/Lucas Jackson

(Reuters) -T-Mobile US Inc said on Wednesday an investigation into a data breach revealed that personal data, including social security numbers and driver's license information, of more than 40 million former and prospective customers was stolen.

The stolen files also included data from 7.8 million existing T-Mobile wireless customers.