T-Mobile is investigating data breach affecting up to 100 million customers


T-Mobile is investigating ‘massive data breach’: 100million customers’ contact details, social security numbers, driver licenses and phone serial numbers are ‘stolen by hacker now selling them for $270,000 worth of Bitcoin’

  • Hackers claimed on underground forum to be selling T-Mobile subscriber data
  • The 100 million alleged records would impact nearly all its 104.8m subscribers
  • Said to include social security numbers, IMEI numbers, and driver license data
  • Hacker is seeking six Bitcoin, worth about $270,000, for the stolen information
  • T-Mobile says it is investigating the claim and declined to share further info

T-Mobile is investigating a claim on an underground forum post which says the personal data of over 100 million users have been breached, the company said.

If the hacker’s claims are true, nearly all T-Mobile’s 104.8 million subscribers would be affected, marking a stunning public relations blow for the company and CEO Mike Sievert, who took over last year upon the merger with Sprint. 

‘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,’ a T-Mobile spokesperson said in a statement on Sunday.

U.S.-based digital media outlet Vice first reported the claims of a data breach. The veracity of the hacker’s claims could not be independently verified.

T-Mobile is investigating a claim on an underground forum post which says the personal data of over 100 million users have been breached. T-Mobile CEO Mike Sievert is seen above

According to the report in Vice’s Motherboard, the forum’s post does not mention T-Mobile, but the hacker told Vice they have obtained data of over 100 million people and that the data came from T-Mobile servers.

The data included information such as social security numbers, phone numbers, names, physical addresses and driver licenses information, the report added.

The hacker also claims to have obtained the IMEI numbers that act as a unique fingerprint identifying mobile devices. 

In the online forum, the hacker is asking for six Bitcoin for a subset of the data containing 30 million social security numbers and driver licenses, while the rest of the data is being sold privately, according to the Vice report.

It is not the first breach to impact T-Mobile customers. In 2018, the company was hit with a breach in which hackers obtained the personal data of roughly two million customers including names, addresses, and account numbers.

In 2019, hackers gained access to the personal data of some of T-Mobile’s prepaid customers.  

The hacker claimed the data included information such as social security numbers, phone numbers, and driver licenses information

The hacker claimed the data included information such as social security numbers, phone numbers, and driver licenses information

And a March 2020 breach exposed the social security numbers, financial information, and account information of some T-Mobile customers.

T-Mobile completed its merger with Sprint last April, making it the second largest wireless phone carrier in the U.S.

The company reported a subscriber base of 104.8 million in the second quarter of 2021, second only to Verizon with 121.3 million subscribers. 

Verizon has also been targeted by hackers seeking to steal and sell customer information, and in 2017 a breach exposed the account details of some 14 million subscribers. 

Shares of T-Mobile were down as much as 2 percent in pre-market trading on Monday. 

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