----- Bureau warned breach could expose informants, document shows ----- Hackers stole six months of customer text, call logs from AT&T FBI Has Warned Agents It Believes Hackers Stole Their Call Logs https://www.bloomberg.com/news/articles/2025-01-16/fbi-has-warned-agents-it-... FBI leaders have warned that they believe hackers who broke into AT&T Inc.’s system last year stole months of their agents’ call and text logs, setting off a race within the bureau to protect the identities of confidential informants, a document reviewed by Bloomberg News shows.