T Mobile

The group has been targeted by cybercriminals.


(Photo: dpa)

NY Telekom’s subsidiary T Mobile has become the target of a cyber attack. On January 5, a third party was found to be accessing data without authorization, T-Mobile US announced Thursday after the US stock market closed. With the help of outside experts, the source of the attack was found and arrested the day after meeting.

Investigations were still ongoing. It cannot be ruled out that high costs were incurred as a result of the attack, which began around November 25.

According to this, the hackers were able to access the data of around 37 million customers and see names, billing and email addresses, phone numbers, dates of birth and bank account numbers. Based on current knowledge, the attacker was unable to access any other sensitive data, he said.

The successful attack represents the second major IT security breach at T-Mobile US in two years, the Wall Street Journal reported. The shares fell more than 2 percent in after-hours trading.

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The leak became known through a report to the US telecommunications supervisor on Thursday. The company said it was working with law enforcement and cybersecurity advisers.

Attack through the interface

Affected customers are currently being notified. Credit cards, social security numbers and account passwords have not been compromised so far. T-Mobile US has more than 110 million customers. As a result, the details of 37 million postpaid and prepaid customer accounts were probably disclosed.

“Some basic customer information was obtained,” T-Mobile said in a statement. These are almost entirely “widely available in marketing databases or directories.”

The company stated that the hacker or hackers had illegally retrieved data through the so-called API interface. T-Mobile said it ceased operations within 24 hours of its discovery.

T-Mobile US had already admitted to a security breach in 2022 after the data of more than 76 million US citizens was disclosed, including on Internet data sharing platforms. According to media reports, T-Mobile US has agreed to a $350 million settlement to resolve a class action lawsuit.

T-Mobile US is a major revenue generator for the Deutsche Telekom, which the American subsidiary wanted to sell years ago. still in september T-Mobile US had surpassed its US rivals Verizon and AT&T in market valuation.

With dpa material.

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