The company has confirmed on its website that they suffered from a security breach on the 20th of August. According to T-Mobile, “Out of an abundance of caution, we wanted to let you know about an incident that we recently handled that may have impacted some of your personal information. On August 20, our cyber-security team discovered and shut down an unauthorized access to certain information, including yours, and we promptly reported it to authorities.”
However the good news is that despite the breach, no financial information related to customers, such as credit card information, or social security numbers, were compromised. Passwords are also reported to be safe, although given that some personal information was exposed, for those who use personal information as their passwords such as birth dates, maybe you should update your passwords just to be safe.
T-Mobile adds, “We take the security of your information very seriously and have a number of safeguards in place to protect your personal information from unauthorized access. We truly regret that this incident occurred and are so sorry for any inconvenience this has caused you.”