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AskCyber Home » News » News » T-Mobile Data Breach Tally Now Stands at 54 Million Customers Breached

T-Mobile Data Breach Tally Now Stands at 54 Million Customers Breached

2021-08-20 by Michelle Dvorak

T-Mobile Data Breach Update

Number of hacked T-Mobile Customers Keeps Growing as Investigation Continues

The reported number of T-Mobile current, former, and prospective customers impacted by the latest T-Mobile data breach has increased again. Last week, hackers posted a tranche of stolen data they claimed was heisted from mobile carrier T-Mobile.  According to the cybercriminals, they exfiltrated about 100 million customer records.

Vice’s Motherboard magazine reported that cybercriminals were selling T-Mobile customer data I’m online forum. On August 18, T-Mobile acknowledged that they indeed were hacked again.

This is the fifth time since 2018 that T-Mobile servers have been hacked and customer data was stolen.

Initially, T-Mobile said that about 48 million customers and prospective customers were impacted by the data breach. Today the company said that the number of affected customers is estimated at about 54 million.

screenshot of forum post selling T-Mobile database (below)

Image Source: BleepingComputer

Hacked T-Mobile Customers Include

  • 13.1 million current T-Mobile postpaid customers
  • 40 million former or prospective T-Mobile customers
  • 667,000 accounts of former T- Mobile customers
  • 850,000 active T-Mobile prepaid customers

READ Telecom T-Mobile Investigating Major Data Breach

The postpaid customers had their full names, birthdates, social security numbers, and driver’s license/ID information stolen.

The 40 million former or prospective T-Mobile customers’ full names, birthdates, social security numbers, and driver’s licenses or other government ID were exfiltrated by the hackers.

The former T-Mobile customers’ names, phone numbers, addresses, and birthdates were compromised. 

The last group of 850k active customers had their names, phone numbers’and account PINs stolen.

“We have no indication that personal financial or payment information, credit or debit card information, account numbers, or account passwords were accessed,” maintains T-Mobile.

Filed Under: News Tagged With: T-Mobile

About Michelle Dvorak

Michelle writes about cyber security, data privacy focusing on social media privacy as well as how to protect your IoT devices. She has worked in internet technology for over 20 years and owns METRONY, LLC. Michelle earned a B.S. in Engineering from Rensselaer Polytechnic Institute. Michelle published a guide to Cyber Security for Business Travelers


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