US telecommunications giant T-Mobile disclosed on its web site that it recently suffered a data breach on its e-mail vendor.
“Our Cybersecurity team recently identified and shut down a malicious attack against our email vendor that led to unauthorized access to certain T-Mobile employee email accounts, some of which contained account information for T-Mobile customers and employees.” reads the data breach notification.
According to T-Mobile, the information access may have included customer names, addresses, phone numbers, account numbers, rate plans and features, as well as billing information. The company stressed that customers’ financial information (such as credit card information) and Social Security numbers were not breached.
T-Mobile didn’t disclosed how many users were impacted by the data breach.
T-Mobile disclosed a similar security breach in November 2019, that according to the company impacted a small number of customers of its prepaid service.
Read more about it here.