Stolen data includes millions of AT&T customer phone numbers, calling and text records, and location-related data

[...] AT&T said the stolen data “does not contain the content of calls or texts,” but does include calling and texting records that an AT&T phone number interacted with during the six-month period, as well as the total count of a customer’s calls and texts, and call durations — information that is often referred to as metadata. The stolen data does not include the time or date of calls or texts, AT&T said.

Additional article: https://krebsonsecurity.com/2024/07/hackers-steal-phone-sms-records-for-nearly-all-att-customers/