Password Breach Checker
Reused or leaked passwords are the No. 1 way accounts get taken over. Check whether a password has turned up in a known data breach — privately, without ever sending the password itself.
Your password is hashed in your browser and only the first 5 characters of that hash are ever sent (the k-anonymity model). We — and the breach database — never see your password, and nothing is stored. Still, don’t paste a password you actively use if you’d rather not.