Att Data Breach March 2025 Update. At&t said, saturday, march 30, 2025, it has begun notifying millions of customers about the theft of personal data recently discovered online. At&t has confirmed the circulation of a data breach online, impacting over 7.6 million existing.

What to know about the 2025 at&t data breach. A cyberattack on the telecommunications giant at&t exposed phone records from “nearly all” of its customers but did not compromise the content of calls or texts, the.