AT&T has revealed a significant data breach affecting approximately 110 million customers, where phone records from May to October 2022 were stolen. This includes call and text metadata, though not the content. The breach also impacted users of other carriers using AT&T’s network. The incident, tied to a compromise at cloud provider Snowflake, occurred after AT&T data stored there was accessed by hackers. Snowflake blamed customers for not using multi-factor authentication. The FBI and DOJ delayed public notification due to national security concerns, and at least one individual has been arrested.