 They say was sent to AT&T showing them deleting the data. AT&T hasn't commented publicly on the reports. Nearly all AT&T cell phone customers have been impacted by the breach. Revealed on Friday, the telecom company says the compromised data includes tens of millions of customers' iPhone numbers between May 1, 2022 and October 31, 2022. Customers' personal information and the contents of their calls or texts were not exposed.