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T-Mobile is investigating a massive data breach affecting 100 million customers

If you’re a T-Mobile customer you probably had your information leaked (again)

t-mobile logo on glass wall
Image: Unsplash

Here we go again. T-Mobile is reportedly investigating a data breach in which a hacker stole personal information from as many as 100 million customers. The worst part about all of this is that the hacker is trying to sell the data for profit, reports Motherboard.

So what kind of private info does this hacker have? Well, pretty much everything that’s required to start a wireless phone subscription. This includes social security numbers, phone numbers, names, physical addresses, unique IMEI numbers, and driver licenses. Yea, not good.

A T-Mobile spokesperson confirmed to Motherboard that the company is currently investigating the claim made by the hacker but isn’t forthcoming with any new information:

“We are aware of claims made in an underground forum and have been actively investigating their validity. We do not have any additional information to share at this time.” 

Motherboard independently reviewed the data and confirmed that it’s legit and authentic. The good news is that T-Mobile seems to have blocked access to the hacked servers, but the damage has already been done as the hacker claims to have stored the hacked data locally.

READ MORE: T-Mobile has just suffered yet another data breach

At this point, it’s too early to tell if T-Mobile’s systems were breached or not. The company hasn’t publically announced anything yet. But if you’re a T-Mobile customer and concerned about your data being compromised in this hack, keep an eye out for any suspicious activity on your account.

Update 8/16/2021 4:29 PM EST: T-Mobile confirms it was hacked.

“We have determined that unauthorized access to some T-Mobile data occurred, however we have not yet determined that there is any personal customer data involved,” T-Mobile wrote in an announcement.

“This investigation will take some time but we are working with the highest degree of urgency. Until we have completed this assessment we cannot confirm the reported number of records affected or the validity of statements made by others,” the announcement added.

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Kevin is KnowTechie's founder and executive editor. With over 15 years of blogging experience in the tech industry, Kevin has transformed what was once a passion project into a full-blown tech news publication. Shoot him an email at or find him on Mastodon or Post.

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