How to Check If Your Password Has Been Compromised

Data breaches happen constantly. Billions of passwords have been exposed across breaches at major companies. The critical question isn't whether your password might be in a breach — it's how to check safely and what to do about it.

How Password Breaches Work

When a company suffers a data breach, user credentials (emails and passwords) are often leaked and shared in hacker forums. Attackers compile these into massive databases and use them for credential stuffing — automatically trying leaked passwords on thousands of other sites.

Even if your password was only exposed in one breach, it becomes a known password that attackers will try everywhere.

How to Check Safely

Our Password Checker evaluates your password's strength by analyzing:

• Length and complexity — How many characters and what types
• Entropy — Mathematical randomness of your password
• Common patterns — Whether it matches known weak patterns
• Estimated crack time — How long it would take to brute-force

Everything is analyzed locally in your browser. Your password is never sent to any server.

What to Do If Your Password Is Weak

1. Change it immediately — Use our Password Generator to create a strong replacement.
2. Enable two-factor authentication (2FA) — Even if your password is compromised, 2FA provides a second barrier. Use an authenticator app (Google Authenticator, Authy) rather than SMS when possible.
3. Check other accounts — If you reused the password elsewhere, change it on all those accounts too.
4. Use a password manager — Start storing unique passwords for every account.

Understanding Password Strength Metrics

• Very Weak — Could be cracked in seconds. Common words, short length, no complexity.
• Weak — Crackable in minutes to hours. Simple patterns or dictionary words with minor variations.
• Fair — Would take days to weeks. Decent length but predictable patterns.
• Strong — Would take years. Good length, mixed character types, no patterns.
• Very Strong — Would take centuries or longer. Long, random, diverse characters.

Check your password strength now with our Password Checker — completely private, nothing leaves your browser.