More numbers coming in for T-Mobile’s 2021 Cybersecurity attack


T-Mobile has revealed further information about the recent cybersecurity attack. Aside from the earlier 48 million victims, there are another 5.3 million existing T-Mobile postpaid customers that have been found to be part of the hack. 

The newly discovered victims had their customer names, addresses, birthdays, phone numbers, IMEIs and IMSIs illegally accessed by the hackers. Unlike the first report, these accounts did not have their SSNs or driver’s license/ID information stolen. 

The new information also reveals another 667,000 former T-Mobile subscribers that have been included in the attack. The information stolen from them include their customer names, addresses, birthdays, phone numbers, IMEIs and IMSIs. 

It was formerly reported that Metro by T-Mobile subscribers were safe from the hack. But now, it looks like 52,000 Metro by T-Mobile customers have been included in the attack. 

Former Sprint prepaid and Boost Mobile customers remain to be in the clear. 

In total, these are the victims of the hack:

  • 40,667,000 former or prospective T-Mobile customers
  • 13,100,000 existing T-Mobile postpaid customers
  • 850,000 existing T-Mobile Prepaid customers
  • 52,000 Metro by T-Mobile customers

The Federal Communications Commission (FCC) has announced that it will be launching its own investigation. At least one class-action lawsuit has already been filed against T-Mobile, saying that its response and promise of a two-year identity protection service remains “inadequate” at this time. 


Source: T-Mobile

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  • Trevnerdio

    Just got the text today that “some” of our account’s data was breached. Wooo

    • vedichymn

      Same here, I guess glad they didn’t get everything but still…

    • Francisco Peña


    • Charmed79

      Same with us, it’s just ridiculous at this point!

  • Ben

    I’ve yet to be notified. Does that mean my info wasn’t included in the compromised? I just don’t trust them anymore.
    I don’t understand the business case for keeping 40 million past/perspective customer data. Seems excessive and unnecessary to me

    • Charmed79


  • pda96

    TMO is incompetent. The FTC should fine this company.

  • UltramanX

    It is unacceptable. I got a text from T-Mo too. The 2-year Identity Protection from McAfee is useless to me as I was a victim of Sim Swap 2 years ago and I am already paying for premium Identity protection. If IMEI was compromised they should at least give a high discount for customer affected to replace the phones with a new one with different IMEI. Already thinking on switching phone company.

  • krisstofer

    I just got text too. So what do I need to do then?

  • steadymobb

    Pretty clear why TMobile is 3rd in the wireless race. If you downvote me you work for TMobile lol

  • nash2vic

    How do I check if my information has been compromised?