• T-Mobile has been hacked again, impacting 37 million accounts

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    https://www.sec.gov/ix?doc=/Archives/edgar/data/0001283699/000119312523010949/d641142d8k.htm

    On January 5, 2023, T-Mobile US, Inc. (the “Company,” “we,” or “our”) identified that a bad actor was obtaining data through a single Application Programming Interface (“API”) without authorization. We promptly commenced an investigation with external cybersecurity experts and within a day of learning of the malicious activity, we were able to trace the source of the malicious activity and stop it. Our investigation is still ongoing, but the malicious activity appears to be fully contained at this time, and there is currently no evidence that the bad actor was able to breach or compromise our systems or our network.

    Our systems and policies prevented the most sensitive types of customer information from being accessed, and as a result, based on our investigation to date, customer accounts and finances were not put at risk directly by this event. The API abused by the bad actor does not provide access to any customer payment card information (PCI), social security numbers/tax IDs, driver’s license or other government ID numbers, passwords/PINs or other financial account information, so none of this information was exposed. Rather, the impacted API is only able to provide a limited set of customer account data, including name, billing address, email, phone number, date of birth, ..

    T-Mobile says breach exposed personal data of 37 million customers

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