🔍 Password Breach Checker
Enter a password to see if it has appeared in known data breaches.
We never store or send your password.
❓ Frequently Asked Questions
Is it safe to use this breach checker?
Yes. Your password is hashed locally in your browser. Only a portion of the hash is sent to the server to preserve your privacy.
What is k-anonymity?
It's a privacy method that sends only the first 5 characters of your password's hash. This means the full password is never exposed or stored.
What does it mean if my password is found?
It means the password has been exposed in a known data breach and should not be used. We recommend generating a new strong password.
Where does the breach data come from?
We use HaveIBeenPwned's free public API, which collects data from known public data breaches.