T-Mobile says data breach exposed personal data of more than 40 million people

Personal data included social security numbers, the company said.

T-Mobile confirmed that the personal information of millions of current and prospective customers was compromised in a recent "highly sophisticated cyberattack." Some of the data accessed by hackers includes first and last names, dates of birth, social security numbers, and drivers license or ID information. The company said no phone numbers, account numbers, passwords or financial information, including credit or debit card details, were compromised. The cell phone carrier said the access point bad actors used to illegally gain entry to its servers was located and closed, but the company's investigation into the breach is ongoing. "Our preliminary analysis is that approximately 7.8 million current T-Mobile postpaid customer accounts' information appears to be contained in the stolen files, as well as just over 40 million records of former or prospective customers who had previously applied for credit with T-Mobile," the company said.