🛡️ Password Breach Checker

Check if your password has appeared in known data breaches

🔐 Need a secure password? Try SecurePass Generator
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Privacy Protected: Your password is hashed locally using SHA-1. Only the first 5 characters of the hash are sent to the API via HTTPS. Your actual password never leaves your device and cannot be reconstructed from the hash.
📚 Learn About Password Security

What are data breaches?

Data breaches occur when hackers steal user information from websites or services. Even secure sites can be compromised, exposing user passwords. Major breaches have affected billions of accounts worldwide.

Why check breach databases?

Attackers often try passwords from previous breaches first using automated tools. If your password appears in breaches, it's likely in their "common passwords" list and significantly easier to crack.

Famous breaches to know about

RockYou (2009): 32M passwords revealed common patterns like "123456"
LinkedIn (2012): 117M professional accounts compromised
Yahoo (2013-2014): 3B accounts affected in multiple breaches
Have I Been Pwned: Troy Hunt's service tracks 12B+ breached accounts

How to create secure passwords

Use long, unique passwords for each account. Consider passphrases like "Coffee-Mountain-Purple-42" or use our SecurePass generator for cryptographically secure passwords. Enable 2FA whenever possible.

What to do if your password is breached

Immediately: Change the password on all accounts using it
Enable 2FA: Add extra security layers
Use unique passwords: Never reuse passwords across accounts
Monitor accounts: Watch for suspicious activity