• T-Mobile USA says a recent hack affected the data of 37 million of its customers.
• Customers’ names, addresses, phone numbers, and account numbers were among the hacked information.
• The company identified the source of the hack within 24 hours.

T-Mobile USA stated on Thursday that a recent hack affected the data of 37 million of its customers.

In a filing with the US Securities and Exchange Commission (SEC), the company stated that on January 5, it discovered that a “bad actor” had infiltrated its computer system and was syphoning out data without authorization.

The company said that after identifying the source of the hack, it was fixed within 24 hours and that it believes the remainder of its systems were not compromised.

Later, the company discovered that the attack most likely began around November 25.

T-Mobile users’ names, addresses, emails, phone numbers, dates of birth, and account numbers were among the hacked information.

According to the company, it does not include bank or social security card numbers, tax information, or passwords.

“Customer accounts and finances were not put at risk directly by this event,” the Deutsche Telekom-owned company stated.

Customers who have been affected will be notified, and an internal investigation is still ongoing, according to the company.

“We may incur significant expenses in connection with this incident,” T-Mobile stated.

The new hack comes after another incident in 2021 that compromised the data of 76.6 million US residents.

Last August, the company agreed to pay $350 million to settle class-action lawsuits and spend $150 million on data protection and cybersecurity in 2022 and 2023.

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