Looking at the law: T-Mobile Data Breach in 2021

Thank you to everyone who told us about the T-Mobile data breach. At this point, ClassAction.org lawyers are no longer taking claims from T-Mobile customers who want to go to arbitration. But a settlement has been reached through a class action, and people who haven't signed up for mass arbitration can still take part. Read more about that settlement on our blog.

When the investigation started, this information was posted, and you can still use it. Here is a list of the open investigations we have.
This warning is for:
When T-System Mobile's system was hacked in 2021, the personal information of anyone who used it was made public.
What's going on?
Attorneys who work with ClassAction.org are getting together current and former T-Mobile customers to sue the company over the 2021 data breach that exposed the personal information of millions of current and former T-Mobile customers.
What do I have myself in for?
You are agreeing to take part in something called "mass arbitration." This is when hundreds or thousands of customers all file individual arbitration claims against the same company at the same time and over the same issue. It's not the same as a typical class action lawsuit.
What is the price?
Signing up is free, and you don't have to pay the lawyers if they don't win your case.
How Can I Get It?
People who sign up for mass arbitration might be able to get hundreds of dollars, but there are no guarantees.
Lawyers from ClassAction.org want to talk to anyone whose personal information was exposed in the data breach that T-Mobile said happened in August 2021.

What Will I Really Get If I Sign Up?
You are agreeing to take part in something called "mass arbitration" by lawyers. This is when hundreds or thousands of customers all file individual arbitration claims against the same company at the same time and over the same issue. In some cases, the company may choose to settle quickly instead of arbitrating a large number of claims and paying the expensive up-front fees that come with it.

On the other hand, traditional litigation means filing a formal lawsuit with the court and maybe even going to trial. Mass arbitration doesn't work like this. Arbitration is a way for two people to work out their differences without going to court. A third-party arbitrator makes the decision instead of a judge or jury. Because of this, some lawyers have decided to use a process called "mass arbitration" to solve the problem.

What is the price?
It doesn't cost anything to sign up.You don't have to pay if they lose your case.

How Can I Get It?
People who sign up for mass arbitration might be able to get hundreds of dollars, but there are no guarantees.

risk of identity theft and fraud for a long time. People could get the money they need to pay for these extra costs by going to court.

In 2021, there was a data breach at T-Mobile. Was I a victim?
Late in August, hackers told the media that they had taken personal information from T-servers belonging to more than 100 million people. T-Mobile says that the stolen data files did not all contain the same information.

Customers who pay monthly for T-Mobile service: first and last names, addresses, dates of birth, Social Security numbers, driver's licence or ID information, phone numbers, and IMEI and IMSI information (unique identifiers associated with your mobile device and SIM card)

Customers of T-Mobile in the past or in the future: first and last names, phone numbers, addresses, dates of birth, Social Security numbers, and driver's licence or ID information.

Names, phone numbers, and PINs for T-Mobile prepaid customers who are active and who aren't, as well as those who aren't.

People who have T-Mobile and use Metro: