In July 2020, the company was reportedly hacked through Samsung’s website.īreached customers are at risk of phishing through text messages (smishing) containing links to malicious sites. Hackers compromised Sprint’s customers’ accounts using the victims’ mobile numbers and PIN in May 2020. T-Mobile’s partner company Sprint also disclosed several breaches in 2019. Hackers had accessed personally identifiable information (PII) for 1 million prepaid customers in November 2019 while the August 2018 data breach exposed sensitive information for 2 million customers. The hack originated from a breached third-party email vendor, granting attackers access to employees’ emails. The data breach was limited in scope compared to the March 2020 breach exposing employee and customer personal information, including social security numbers and financial information, including government identification numbers for some victims. However, the Bellevue, Washington-based mobile operator clarified that the data breach did not expose customer names on the account, physical or email addresses, financial data, credit card information, social security numbers, tax ID, passwords, or PINs. The mobile giant added that the CPNI information possibly “included phone numbers, number of lines subscribed to on your account and, in some cases, call-related information collected as part of the normal operation of your wireless service.” The telecom giant said that the hackers accessed “customer proprietary network information (CPNI) as defined by the Federal Communications Commission (FCC).” ![]() Customer proprietary network information exposed in T-Mobile data breach
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