On Friday, AT&T disclosed that it had been the target of a significant cyberattack in which data collected illegally in April from over 109 million user accounts—including call and text histories from 2022—was obtained.
AT&T revealed on Friday that it had been the victim of a major hacking attack in which information from over 109 million user accounts—including call and text logs from 2022—was taken unlawfully in April. The American telecom provider disclosed that at least one person has been taken into custody and that the FBI is looking into the hack. The stolen information was obtained from AT&T’s workplace on an unaffiliated cloud platform, signifying a serious compromise of customer correspondence records. This incident comes after a ransomware assault in February that affected the Change Healthcare arm of UnitedHealth Group and compromised sensitive information for roughly one-third of the US population.
According to AT&T, almost all of its landline and cellular users’ interactions with cellular numbers between May and October 2022 are included in the exposed data, which also includes call and text records. The content of calls or texts, as well as private information like social security numbers, are not included in the data. AT&T shares dropped 1.2% in early trading after the news. The Justice Department had requested that the business postpone the revelation of the intrusion. The FBI verified its cooperation with AT&T and the Justice Department throughout the investigation, providing critical threat intelligence to assist AT&T’s incident response operations, even if it did not name any suspects on Friday. There is also an ongoing inquiry by the Federal Communications Commission.
Records for a limited number of consumers dated January 2, 2023 are also included in the hacked data. On April 19, AT&T first discovered that a hacker had purportedly illegally accessed and duplicated its call logs. According to the company’s analysis, between April 14 and April 25, hackers stole files that contained client text and call logs. In addition to aggregate call time and interactions with phone numbers, some of these records also include one or more cell site identification numbers. Since then, AT&T has sealed off the unauthorized access point and is of the opinion that the data is not openly accessible.
AT&T looked into a data set that was made public on the “dark web” in March that included 65.4 million past and 7.6 million present account holders. This data set seems to be from 2019 or earlier, according to the business.
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