The call and text records of early all of AT&T’s cellular network customers were exposed in a huge cybersecurity hack, the company revealed Friday.
The company said in an SEC filing it learned from an internal investigation that in April, hackers “unlawfully accessed and copied AT&T call logs” that were saved on a third-party cloud platform.
The data contains records of calls and texts between approximately May 1 and Oct. 31, 2022, and on Jan. 2, 2023.
The content of the calls and messages was not compromised and customers’ personal information was not accessed — but the records did include phone numbers. The sheer size of the hack underlines the scale of the cybersecurity challenge facing big business.
“While the data does not include customer names, there are often ways, using publicly available online tools, to find the name associated with a specific telephone number,” the company said in its SEC filing.
AT&T said it has “taken additional cybersecurity measures in response to this incident including closing off the point of unlawful access.” Customers affected by the hack will be contacted, it said.
This is a developing story. Please check back for updates.
