AT&T announced on Friday that data from 109 million customer accounts consisting of 2022 call and text records was illegally downloaded in April.
In a major breach of consumer communication records, AT&T call logs were downloaded from its workspace on a third-party cloud platform. The FBI is investigating, and at least one individual has been arrested.
After UnitedHealth Group’s ransomware attack, AT&T’s breach is the next major hack to affect many Americans. Change Healthcare unit in February compromised private data for one-third of the country.
AT&T claimed the exposed data contains files detailing nearly all of its cellular and landline customers’ conversations and messages from May to October 2022. Call and text content and social security numbers are not included.
Early trading saw AT&T shares fall 1.2%. AT&T delayed hack disclosure at the Justice Department’s request.
The FBI said it worked with AT&T and the Justice Department “collaboratively through the first and second delay process, all while sharing key threat intelligence to bolster FBI investigative equities and to assist AT&T’s incident-response work.
Federal Communications Commission said it’s also investigating.
A few clients’ Jan. 2, 2023 records were affected.
The hacker claimed to have illegally accessed and copied AT&T call information on April 19. The business determined hackers stole AT&T call and text records between April 14 and 25. The records also include AT&T cellular clients of mobile virtual network carriers.
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