FBI believes cyberattackers accessed agents’ call and text logs, Bloomberg says

FBI officials have warned that they believe hackers who breached AT&T‘s system last year stole months of their agents’ call and text logs, spurring the bureau to try and conceal the identities of its informants, Bloomberg’s Jake Bleiberg and Margi Murphy report, citing a document. Bureau officials told agents across the U.S. that information about their use on the network were believed to be among the billions of records access in the cyberattack, the authors note.