The breach, estimated to have affected more than a million customers, came from malicious external actors.
More than a million T-Mobile prepaid customers’ personal information and account details were exposed in a data breach. According to the company no payment information, Social Security numbers, or passwords were exposed in the breach, which it described as “malicious, unauthorized access.”
T-Mobile informed effected customers on Friday and says that the unauthorized access was shut down by its internal security team. While passwords were said not to be compromised, T-Mobile is advising affected customers to change their passcode or PIN as soon as possible.