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The American telecommunications company AT&T began to study data published in on the dark web about two weeks ago, and found that the leak affected approximately 8.6 million active account holders and 65.4 million former customers.
Reuters, citing a report from AT&T, writes that the leak occurred before 2019, but the company “has no evidence of unauthorized access to the systems.” It is also unknown whether the data came directly from AT&T or from one of its suppliers.
The incident did not have a significant impact on the operation of networks, according to the company, which has already reset passwords for 7.6 million active customers and is in contact with all those affected.
AT&T's network reaches approximately 290 million people in the United States. The leaked data includes the names of the operator's customers, their home addresses, phone numbers, dates of birth and social security numbers.
Let us recall that in December last year, the largest Ukrainian operator Kyivstar was subjected to a large-scale cyber attack – the company’s president, Alexander Komarov, called it “the world’s largest hacker attack on telecom infrastructure.” It was noted that the first attempts to penetrate the system by hackers, probably from the Russian GRU Sandworm, were made back in March 2023. More than 24 million of the operator’s subscribers were left without communications and the Internet for several days. To compensate for losses to customers, Kyivstar canceled the monthly subscription fee – this cost UAH 3.6 billion.
According to the State Service for Special Communications, the number of cyber attacks on Ukrainian companies, government organizations and the security and defense sector in 2023 increased by 15.9%. In 2024, the attacks continued – in January, the Parkovy data center was damaged, due to which the services of Naftogaz, Ukrposhta and Ukrzaliznytsia were partially not working, as well as the Shlyakh border crossing system.
The Technology section is published with the support of Favbet Tech
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