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T-Mobile hit with a data breach

T-Mobile has experienced a data breach and customers may be affected by SIM swapping and their network information may have been leaked. (Image: Mika Baumeister)
T-Mobile has experienced a data breach and customers may be affected by SIM swapping and their network information may have been leaked. (Image: Mika Baumeister)
T-Mobile has been hit with a data breach that appears to affect only a small number of customers. Users may be victims of SIM swapping and their CPNI may have been exposed. This attack comes after a massive breach in August.
Aleem Ali,

T-Mobile has suffered a data breach according to The T-Mo Report. While this breach appears to be on a smaller scale, the mobile company was hit with another, much larger-scale attack in August.

Documents show that bad actors targeted user accounts and engaged in 'unauthorized activity' in the form of SIM swapping or spying of the user's customer proprietary network information (CPNI).

SIM swapping is a method of circumventing two-factor authentication by changing the victim's physical SIM card, which allows hackers to gain access to other accounts associated with that device such as bank accounts.

Furthermore, users who have had their CPNI exposed may have their personal information stolen such as their billing account, account numbers, phone numbers and plan information. Also, some users may have been affected by both SIM swapping and spying of their CPNI.

On a positive note, the data breach seems not to be widespread and the document purports that the SIM swaps have been addressed and compromised accounts are being monitored.

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Source(s)

The T-Mo Report (1) & (2)

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Aleem Ali
Aleem Ali - Tech Writer - 72 articles published on Notebookcheck since 2021
I became fascinated with computers from the age of 5 years old, starting with Windows 95. Since then, I have developed a passion for human interactions. After completion of my undergraduate degrees, my interest in technology grew and propelled me to push into new areas. Now, I seek to expand my knowledge of technology, people, and business; and I write articles about new and exciting technology and experiences. I also enjoy gaming and design.
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 12 > T-Mobile hit with a data breach
Aleem Ali, 2021-12-29 (Update: 2021-12-29)