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T-Mobile probe into breach finds more customers hit, tally now at 53 million

The data includes addresses, dates of birth and phone numbers of customers, the company said, adding that it had no indication that the accessed data contained financial information such as credit card or other payment data.

August 20, 2021 / 07:29 PM IST

T-Mobile US Inc said on Friday an ongoing investigation into a data breach revealed that hackers accessed personal information of an additional 5.3 million customers, bringing the total number of people affected to more than 53 million.

The third-largest U.S. wireless carrier said earlier this week that personal data of more than 40 million former and prospective customers was stolen along with data from 7.8 million existing T-Mobile wireless customers.

In its latest update, which comes days after the U.S. Federal Communications Commission (FCC) opened an investigation into the breach, T-Mobile revealed it had identified 5.3 million additional current wireless subscribers who were impacted by the breach as well as 667,000 more accounts of former customers.

The data includes addresses, dates of birth and phone numbers of customers, the company said, adding that it had no indication that the accessed data contained financial information such as credit card or other payment data.

The wireless carrier is the latest victim of a series of cyberattacks on large corporations in the United States as hackers exploit weakened user system privacy and security due to work-from-home policies instituted since the onset of the coronavirus pandemic.

Close

"Our investigation is ongoing and will continue for some time, but at this point, we are confident that we have closed off the access," T-Mobile said in a regulatory filing.

Shares of the company were flat in early trading on Friday. They have fallen around 3% since the breach was first disclosed.

T-Mobile has offered two years of antivirus maker McAfee's identity protection services, which includes protection from online theft, free to anyone who believes their data was breached.

Its steps won praise from some analysts.

"We believe TMUS (T-Mobile) is taking the correct steps to both secure its systems as well as contain the fallout with customers by offering two free years of identity protection,"

Keith Snyder, equity analyst at CFRA Research, said in a note on Wednesday.

 
Reuters
first published: Aug 20, 2021 07:28 pm

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