Att Data Breach 2024 Social Security Number Change. On july 12, 2024, at&t said its breach did not include personally identifiable information, such as social security numbers. The phone numbers that you texted and called, as well as how frequently you interacted with them, were exposed by the breach, the company said.

 — at&t said the breach on saturday affected about 7.6 million current and 65.4 million former at&t customers.  — at that time, at&t said personal information, such as social security numbers on 73 million current and former customers, was released onto the dark web.