T-Mobile breach exposes personal information of 40 million US users

Social security numbers, names, phone numbers and account pins were exposed in some cases, according to the company

A security breach against T-Mobile has exposed personal information, including social security numbers (SSN) and pins in some cases, of more than 40 million users, the company said in a statement on Wednesday morning.

The same data for about 7.8 million current T-Mobile post-paid customers appears to be compromised. No phone numbers, account numbers, pins, passwords or financial information from the nearly 50m records and accounts were compromised, it said.