AT&T Data Breach Exposes 86 Million Customer Records

In May 2025, AT&T disclosed a massive data breach affecting approximately 86 million customer records, making it one of the largest cybersecurity incidents of the year. The breach involved sensitive personal information, including names, dates of birth, phone numbers, email addresses, physical addresses, and Social Security numbers. The compromised data was posted to a hacking forum, with samples provided to validate the claims, though AT&T’s investigation suggested the data was a compilation of previously leaked information, primarily from the 2024 Snowflake breach, rather than a new intrusion into their systems.

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