15 million T-Mobile customers exposed in massive data breach

T-Mobile

Experian, which handles credit applications for T-Mobile, has experience a data breach that affects 15 million Americans.

In a press release, the company explained that an unidentified hacker accessed a server that contained the names, addresses, date of birth information and other information of anyone who applied for a credit check with T-Mobile to sign up for a new account or device with the Uncarrier between September 1, 2013 and September 16 of this year, regardless if they didn't end up signing up with them.

While the data breach didn't include any credit card or banking information, it did include files containing social security numbers and ID numbers from things like drivers licenses or passports, and though they were encrypted, the encryption may be compromised.

Experian is one of the top three credit reporting agencies in the country, alongside Equifax and TransUnion.

Uncarrier breached

Experian and T-Mobile have both said that an investigation is being conducted, with Experian contacting relevant law enforcement agencies as well as notifying those who may be affected.

Experian is also offering two years of credit monitoring and identity resolution services through ProtectMyID for those who have been affected, though it says "there is no evidence to-date that the data has been used inappropriately."

While T-Mobile's own network or systems were not hacked, CEO John Legere in an open letter said, "We are working with Experian to take protective steps for all of these consumers as quickly as possible."

"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 and and all consumers affected," he said.

T-Mobile is inviting anyone with concerns to contact the Uncarrier, and has posted up a Q&A page about the breach, as has Experian.

Latest in T-Mobile
T-Mobile went down – everything we know about this network outage
Ryan Reynolds kneeling over a star
With T-Mobile aiming for control, is Mint Mobile still the best wireless bargain?
Un-carrier On
T-Mobile rolled out a hot magenta smart suitcase, and I want it
Renovated Headquarters
T-Mobile tempts Apple iPhone owners to switch using an app
T-Mobile and Starlink launch event
This is why I want T-Mobile and Starlink's out-of-this-world satellite phone plan
T-Mobile 5G map
T-Mobile has shown just how fast 5G is by launching its new network four days early
Latest in News
Zendesk Relate 2025
Zendesk Relate 2025 - everything you need to know as the event unfolds
Disney Plus logo with popcorn
You can finally tell Disney+ to stop bugging you about that terrible Marvel show you regret starting
Google Gemini AI
Gemini can now see your screen and judge your tabs
Girl wearing Meta Quest 3 headset interacting with a jungle playset
Latest Meta Quest 3 software beta teases a major design overhaul and VR screen sharing – and I need these updates now
Philips Hue
Philips Hue might be working on a video doorbell, and according to a new report, we just got our first look at it
Microsoft
"Another pair of eyes" - Microsoft launches all-new Security Copilot Agents to give security teams the upper hand