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Change the password
On the breached site and everywhere else you reused it. Make every password unique.
Enable 2FA
A second factor keeps a leaked password from becoming a hijacked account.
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and get notified the moment your data appears in a new leak.
AT&T breach: questions and answers
When did the AT&T data breach happen?
The AT&T breach dates to January 2021.
How many records were leaked in the AT&T breach?
LeakCheck has indexed 49,095,095 records from the AT&T breach.
What data was exposed in the AT&T breach?
The leaked records include email addresses, names, dates of birth, physical addresses, geographic locations and social security numbers.
Were passwords exposed in the AT&T breach?
No. The records indexed from AT&T do not include passwords — but the other details they hold can still be used for phishing.
How do I check if my data was in the AT&T breach?
Enter your email address, username or phone number in the search form on this page. The free check shows whether your data appears in the AT&T breach — and in any of the other 1,468 sources LeakCheck indexes.
What should I do if my data was in the AT&T breach?
Change the password you used on AT&T and everywhere you reused it, turn on two-factor authentication, and watch for phishing that quotes details from the leak. To hear about the next breach first, set up breach monitoring.