Exposed in this breach? Do this now
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.
Set up monitoring
and get notified the moment your data appears in a new leak.
Collection 1 breach: questions and answers
When was the Collection 1 compilation leaked?
The Collection 1 compilation dates to January 2019.
How many records were leaked in the Collection 1 compilation?
LeakCheck has indexed 231,012,239 records from the Collection 1 compilation.
What data was exposed in the Collection 1 compilation?
The leaked records include email addresses and passwords.
Were passwords exposed in the Collection 1 compilation?
Yes. The indexed Collection 1 records include passwords, in plain text or hashed. If you had an account, change that password and every other password you reused.
Is Collection 1 a single breach?
No. It is a compilation of records aggregated from several leaks rather than a breach of a single site.
How do I check if my data was in the Collection 1 compilation?
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 Collection 1 compilation — and in any of the other 1,468 sources LeakCheck indexes.
What should I do if my data was in the Collection 1 compilation?
Change the password you used on Collection 1 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.