Lauren Silva  |  August 18, 2021

Category: Data Breach

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T-Mobile data breach
(Photo Credit: Mihai_Andritoiu/Shutterstock)

T-Mobile Data Breach Overview:

  • Who: A hacker gained access to T-Mobile’s servers, potentially stealing data of 100 million T-Mobile customers.
  • Why: The customers’ personal information is now being sold on online forums.
  • Where: T-Mobile is headquartered in Washington, but the data breach may affect millions of customers across the United States.

Hackers have potentially nabbed the personal information of 100 million T-Mobile USA customers, which is reportedly being sold on online forums. 

The data breach includes customers’ names, Social Security numbers, addresses, dates of birth, phone numbers, and unique device identification numbers, according to Krebs on Security. The data, which does not include Sprint accounts, may even go as far back as the mid-1990s.

An ongoing investigation by T-Mobile confirmed the data breach, but not whether personal customer data was leaked or the scale of the breach. 

In a statement, T-Mobile noted that it was “confident that the entry point used to gain access has been closed.” 

However, Motherboard reports that it obtained intel from the person selling the stolen information online, who claims the hacker already “backed up [the customer data] in multiple places” before T-Mobile restricted access. 

A class action lawsuit has not yet been filed for this T-Mobile data breach. In 2015, T-Mobile and Experian North America Inc. faced a class action lawsuit by consumers who claimed their information was exposed in a data breach that potentially affected 15 million people.

If you were affected by this data breach, you may be able to join a future class action lawsuit

Who Caused The T-Mobile Data Breach?

The identity of the hacker has not yet been revealed or confirmed by T-Mobile or other authorities.

As Krebs on Security reports, the Twitter account @Und0xxed called attention to the breach on the social media platform. 

Although claiming to not be the hacker themselves, they have given credit to the Twitter user @IntelSecrets, who may also be known under the names IRDev and V0rtex. 

Top Class Actions will continue to monitor the T-Mobile data breach and report on any updates. 

Has your information been compromised in this T-Mobile data breach? Tell us about your experience in the comments below!


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115 thoughts onT-Mobile Investigates Data Breach Potentially Affecting 100 Million Customers

  1. Phylicia Johnson says:

    I have an open account on my credit report that is not mine. Over $1,000 hurting my score.. I have tried several times to dispute it.

    Please add me

  2. Tamara Reese says:

    Please add me accounts open in my name without my permission

  3. Lory says:

    Please add me. I have been told by TMobile I am affected

  4. Becky Ells Murray says:

    I wasn’t T-Mobile customer for many many years I am not sure if my information was a part of the heck, but I do get a lot of phone calls about that collect that is not my debt. I’d love to be added to the list just to be sure I would also like to find out how I can find out if I was one of the people affected

  5. Rosa Dominguez says:

    Add me

  6. Sandra Santos says:

    I was a sprint customer and my account was transferred over to T-Mobile because Sprint and T-Mobile merged. I did get affected. My information is out there in the dark web because of T-Mobile breach. I have proof from my credit report.

  7. Scott Benson says:

    Add Me

  8. Melissa McMillan says:

    Not sure if it was due to the T-Mobile data breach but now I am calls from a collector on something that is not mine.

  9. Angelica Romero says:

    I have t mobile but not sure if my account was compromised. Add me if eligible.

  10. Matthew Taylor says:

    Please add me.

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