Password Breach Checker
Check if your password has been compromised in known data breaches using secure k-anonymity technology.
Check Password Against Data Breaches
Enter your password to check if it has been compromised in known data breaches. Your password is never sent to our servers.
🛡️ Privacy & Security
- Your password is never sent to our servers or any third party
- We use k-anonymity technology to protect your privacy
- Only the first 5 characters of your password's SHA-1 hash are used for checking
- All processing happens locally in your browser
How It Works
1. Hash Generation
Your password is hashed using SHA-1 locally in your browser.
2. k-Anonymity Check
Only the first 5 characters of the hash are sent to check against breach databases.
3. Secure Results
Results are matched locally without revealing your actual password.