T-Mobile has confirmed that millions of current and former customers had their information stolen in a data breach, following reports of a hack over the weekend.
In a statement, T-Mobile, which has more than 100 million customers, said its preliminary analysis shows 7.8 million current postpaid T-Mobile customers had information taken in the data breach. The carrier said that some personal data was also taken, including customer names, dates of birth, Social Security numbers and driver’s license information for a “subset” of current and former postpay customers and prospective T-Mobile customers.
The company also said that 40 million records of former and prospective customers was taken, but that “no phone numbers, account numbers, PINs, passwords, or financial information were compromised.”
But the company warned that approximately 850,000 active T-Mobile customer names, phone numbers and account PINs were in fact compromised, and that customer names, phone numbers and account PINs were exposed. T-Mobile said it has reset those customer PINs. T-Mobile said it was “recommending all postpaid customers” to proactively change their account PIN, which protects their accounts from SIM-swapping attacks.
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