AT&T reports massive data breach affecting nearly all cellphone customers

AT&T revealed a major data breach Friday and confirmed that phone records from mid-to-late 2022 of its roughly 110 million customers were stolen by an unknown hacker.

The breach, discovered in April, involved data illegally downloaded from a third-party cloud platform—Snowflake—the company found in its investigation.

The breached logs contain details such as the numbers called or texted, the frequency of interactions and the duration of calls. The information hacked doesn’t expose message contents, exact timing of communications, Social Security numbers, dates of birth, or customer names.

The telecommunications giant says the data isn’t available publicly as of now.

It is AT&T’s second breach in the last year, though it claims the two hacks are unrelated. In March, the company revealed that personal information, including the Social Security numbers of millions of its customers, was stolen and leaked onto the dark web.