Password Leak Checker

Check if your password has been compromised

Privacy-First Checking

Your password is checked using k-anonymity - only the first 5 characters of its hash are sent. Your actual password never leaves your device.

Your Statistics

Checks

Safe

Leaked

Enter Password to Check

Password Strength:

Auto-check as I type (2-second delay)

Quick Test (Known Compromised Passwords):

Length: characters

Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$) Exclude similar (0/O, 1/l/I)

Error

Password is Safe!

This password has not been found in any known data breaches.

0 breaches detected out of over 11 billion compromised passwords

Password Compromised!

This password appears in data breach(es).

RISK

What This Means:

This password was exposed in a data breach and is publicly known
Attackers can easily crack accounts using this password
If you use this password anywhere, change it immediately

Recommendations:

Create a unique password with at least 12 characters
Use a mix of uppercase, lowercase, numbers, and symbols
Consider using the password generator above
Enable two-factor authentication (2FA) wherever possible

SHA-1 Hash

Hash Prefix (Sent to API)

Breach Count

Checked At

Only the first 5 characters of the hash were sent to the API using k-anonymity for maximum privacy.

Keyboard shortcut: Enter to check password

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How to Use

Step-by-step guide 3 steps

1 Enter Password: Type or paste the password you want to check.
2 Check for Leaks: Click "Check Leak Status".
3 View Report: The tool securely and anonymously checks the hash of your password against databases of known, breached passwords (like Have I Been Pwned) and reports if it has been exposed.

FAQ

Common questions 3 questions

Is it safe to check my password for leaks?

Yes, the tool typically uses a secure method (like the k-anonymity protocol via the SHA-1 hash prefix) to check the database without sending your full, plain-text password over the internet.

What should I do if my password is leaked?

You must immediately change the password on every single account where you used it and enable Two-Factor Authentication (2FA) everywhere possible.

What is a "breached password" database?

It is a publicly available database containing billions of passwords that have been recovered from major data breaches over the years.

Use Cases & Examples

Real-world applications 3 examples

Proactive Security

Example Keyword: check if my password has been pwned
Discover if your existing password has been exposed in a breach, enabling you to change it before an attack.

User Education

Example Keyword: password breach check tool
Demonstrate to users why they must not reuse passwords and the high risk of using a compromised credential.

Account Auditing

Example Keyword: check compromised password status
Verify the status of credentials used for non-critical or legacy applications.