T-Mobile US says Experian breach exposed 15M customers

In a statement, T-Mobile US said that 15M customers impacted by Experian breach

Tmobile SIM card
A T-Mobile SIM card Credit: Martyn Williams

On Thursday, T-Mobile US CEO, John Legere, said that the names, addresses, Social Security numbers, birthdays, and ID information on more than 15 million customers had been compromised after a breach at Experian.

"The investigation is ongoing, but what we know right now is that the hacker acquired the records of approximately 15 million people, including new applicants requiring a credit check for service or device financing from September 1, 2013 through September 16, 2015," a statement from T-Mobile's head executive added.

In an overview of the event, Experian said that on September 15, they discovered that someone had accessed T-Mobile data housed on one of their servers. The company said the investigation of the incident is ongoing.

Additionally, Experian has determined that their encryption may have been compromised.

Legere continued:

"Obviously I am incredibly angry about this data breach and we will institute a thorough review of our relationship with Experian, but right now my top concern and first focus is assisting any and all consumers affected. I take our customer and prospective customer privacy VERY seriously. This is no small issue for us. I do want to assure our customers that neither T-Mobile’s systems nor network were part of this intrusion and this did not involve any payment card numbers or bank account information."

T-Mobile customers are being directed to a website for credit monitoring from Experian, for whatever it's worth.

This story is developing, and will be updated.

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