Check if your email or password has been exposed in a data breach
When a company gets hacked, the email addresses, passwords, and personal details it stored can end up for sale on the dark web. If your data is in one of those breaches, attackers can try those same credentials on your other accounts — a tactic called credential stuffing. Checking takes seconds and costs nothing.
How to check
Use our free Email Breach Checker on the home page. Enter your email address and it searches against billions of leaked records and tells you instantly whether your address has appeared in a known breach. Your email is never stored, and the check runs privately.
What a data breach actually means for you
A breach does not always mean your password is known — sometimes only your email leaks. But if a password did leak, and you have reused it anywhere, every account with that password is at risk. This is why security experts stress unique passwords for every site.
What to do if you were breached
- Change that account’s password immediately, and change it anywhere else you reused it.
- Turn on two-factor authentication (2FA) — even a stolen password is useless without the code on your phone.
- Use a password manager (Bitwarden and KeePass are free) so every account gets a long, unique password you do not have to remember.
- Watch for phishing — after a breach, scammers often email or text you pretending to be the breached company. Never click a login link from such a message; type the address yourself.
Frequently asked questions
Is the checker safe to use? Yes. It queries breach databases using a privacy-preserving method and does not store or share your email address.
My email is in a breach — am I being hacked right now? Not necessarily. It means your data was exposed in a past breach. The risk is that attackers try your leaked password elsewhere, which is why changing reused passwords and enabling 2FA is the priority.
How often should I check? Every few months, and any time you hear that a service you use has been breached.