![]() We also began coordination with law enforcement as our forensic investigation continued. Yesterday, we were able to verify that a subset of T-Mobile data had been accessed by unauthorized individuals.We then located and immediately closed the access point that we believe was used to illegally gain entry to our servers.We immediately began an exhaustive investigation into these claims and brought in world-leading cybersecurity experts to help with our assessment. Late last week we were informed of claims made in an online forum that a bad actor had compromised T-Mobile systems.T-Mobile Shares Additional Information Regarding Ongoing Cyberattack Investigation August 17, 2021Īs we shared yesterday, we have been urgently investigating the highly sophisticated cyberattack against T-Mobile systems, and in an effort to keep our customers and other stakeholders informed we are providing the latest information we have on this event and some additional details: We also remain committed to transparency as this investigation continues and will continue to provide updates if new information becomes available that impacts those affected or causes the details above to change or evolve. Publishing a customer support webpage that includes information and access to these tools at Īs we support our customers, we have worked diligently to enhance security across our platforms and are collaborating with industry-leading experts to understand additional immediate and longer-term next steps.Supporting customers with additional best practices and practical security steps like resetting PINs and passwords.Recommending that all eligible T-Mobile customers sign up for free scam-blocking protection through Scam Shield.Offering two years of free identity protection services with McAfee’s ID Theft Protection Service to any person who believes they may be affected.We have sent communications to millions of customers and other affected individuals and are providing support in various ways. We are continuing to take action to protect everyone at risk from this cyberattack, including those additional persons we recently identified. Further, none of the T-Mobile files stolen related to former Sprint prepaid or Boost customers. None of these data sets included any personally identifiable information. In addition, up to 52,000 names related to current Metro by T-Mobile accounts may have been included. Similar information from additional inactive prepaid accounts was also accessed. We have proactively reset ALL of the PINs on these accounts. As we previously reported, approximately 850,000 active T-Mobile prepaid customer names, phone numbers and account PINs were exposed.We continue to have no indication that the data contained in any of the stolen files included any customer financial information, credit card information, debit or other payment information. ![]() ![]() That data included no personally identifiable information. Separately, we have also identified further stolen data files including phone numbers, IMEI, and IMSI numbers.These additional accounts did not have any SSNs or driver’s license/ID information compromised. We have since identified an additional 667,000 accounts of former T- Mobile customers that were accessed with customer names, phone numbers, addresses and dates of birth compromised. ![]() ![]()
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