U.S. wireless carrier T-Mobile said Thursday it was investigating a data breach involved 37 million postpaid and prepaid accounts and that it expected to incur significant costs related to the incident.
The company said it identified it malicious activity on January 5 and contained it within a dayadding that no sensitive data such as financial information has been compromised.
HNevertheless, some basic information about the customer was obtained, such as name, billing address, email address and phone number, T-Mobile said.
“Our investigation is ongoing, but the malicious activity appears to be fully contained at this time and there is currently no evidence that the attacker was able to compromise or compromise our systems or network,” the company said. . started informing affected customers.
Shares in the company fell 2% in after-hours trading.
Last year, Bellevue, Washington-based T-Mobile agreed to pay $350 million and spend another $150 million to improve data security to settle a 2021 cyberattack lawsuit that compromised information of an estimated 76.6 million people.
T-Mobile has more than 110 million subscribers, making it the third largest mobile carrier in the United States.
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