Password Breach Checker

Check if your password has appeared in known data breaches using the secure Have I Been Pwned database with privacy-focused partial hash transmission. This security tool provides instant breach status results and recommendations for compromised passwords without exposing your actual password data. Essential for cybersecurity audits, password policy compliance, personal security assessment, and protection against credential stuffing attacks and data breaches.

HIBP Database Check Partial Hash Privacy Instant Results Security Recommendations
SECURE
Protected Connection
No breaches found
Found in X breaches
Only first 5 hash chars sent
Trust Score
5.0

Password Breach Checker

Check if your password has been compromised in known data breaches

We only send the first 5 characters of your password's hash - never your actual password. Learn more
Password Strength:

11.7B+

Compromised passwords in database

Data Source

100%

Private - password never sent

How It's Safe

Instant

Real-time breach checking

How It Works

Need a Strong Password?

Don't risk using weak or compromised passwords. Our advanced password generator creates cryptographically secure passwords that are impossible to guess and have never appeared in data breaches.

Customizable Length
Choose 4-128 characters
Multiple Character Sets
Letters, numbers & symbols
Pronounceable Options
Easy to remember
Instant Generation
No waiting required
Quick Password Tips
Use 12+ characters
Mix letters, numbers & symbols
Make each password unique
Don't use personal info
Avoid common patterns
Never share passwords

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

How does the breach checking work?
The tool uses the Have I Been Pwned API, which contains passwords from known data breaches. It sends only a partial hash of your password (first 5 characters) to protect privacy while checking against millions of compromised passwords.
Is it safe to enter my real password?
Yes, the tool uses k-anonymity - only the first 5 characters of your password hash are sent to the API, never your actual password. This method, designed by security experts, protects your privacy while enabling breach detection.
What should I do if my password appears in breaches?
Change the password immediately on all accounts where you use it. Even if the specific breach is old, compromised passwords are used in automated attacks. Replace it with a unique, strong password that has not been breached.
How often is the breach database updated?
The Have I Been Pwned database is regularly updated with new breach data as it becomes available. Major breaches are typically added within days or weeks of disclosure, keeping the database current and comprehensive.
Does this check work for all types of passwords?
The tool checks against actual passwords that appeared in real data breaches. It is most effective for common passwords, dictionary words, and previously compromised passwords. Truly unique, complex passwords are less likely to appear in breach data.

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