T-Mobile says hacker accessed personal data of 37 million customers

In a financial filing on Thursday, T-Mobile revealed that a hacker accessed a trove of personal data belonging to 37 million customers.
The telecom giant said that the “bad actor” started stealing the data, which includes “name, billing address, email, phone number, date of birth, T-Mobile account number and information such as the number of lines on the account and plan features,” since November 25.
In the SEC filing, T-Mobile said it detected the breach more than a month later, on January 5, and that within a day it had fixed the problem that the hacker was exploiting.
The hackers, according

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