Privacy & Security: Password checks use k-anonymity (only partial hash sent to API). Email checks query the Have I Been Pwned database. All password hashing happens locally in your browser. Nothing is stored or logged.
Email breach lookups are temporarily unavailable. We're upgrading this feature and will bring it back soon.
Enter Password to Check
Your password is hashed locally and never sent to any server. Only a partial hash is used for the lookup.
Want to test this tool?
Try these example passwords to see how the breach checker works:
Very Common:
password (breached millions of times)Common:
password123 (breached 47k+ times)Unique: Generate a random password - it should not be breached
Note: Do not test your actual passwords! Use this tool to learn what makes passwords secure.
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ℹ️ Disclaimer
This tool is provided for informational and educational purposes only. All processing happens entirely in your browser - no data is sent to or stored on our servers. While we strive for accuracy, we make no warranties about the completeness or reliability of results. Use at your own discretion.