AT&T Data Hack Prompts FCC Probe, Raises Broad Security Concerns

(Bloomberg) — AT&T Inc. said on Friday that hackers stole a cache of six months worth of mobile-phone customer data, disclosing for the first time a cybersecurity breach that was massive in its scope and potential risks to national security.

The breach at the telecommunications giant included calls and text data for nearly all of its cellular customers from May 1, 2022 to Oct. 31 of that year, and it included the numbers they were calling and a smaller subset of location data.