Your passwords are
already out there.
Billions of credentials leak every year from companies you trusted. Cipher shows you exactly which breaches exposed your email — and what to do before someone else finds out first.
A new data breach is disclosed almost every day. Once your email and password leak, they are copied, combined, and traded across the internet forever. The only real defense is knowing what's already exposed.
From their server to your inbox
A company gets breached
An app, forum, or retailer you signed up for years ago is compromised — often through a stolen employee login or an unpatched server. Most breaches aren't discovered for months.
The user table is dumped
Attackers export the whole users table: emails, usernames, and password hashes — sometimes plaintext passwords, phone numbers, and addresses too.
It's sold, cracked & combined
The dump is traded on forums, weak hashes are cracked back to plaintext, and it's merged into massive "combolists" that map one person across dozens of leaks.
Reused passwords open your accounts
Bots replay those email + password pairs against banking, email, and social logins. If you reused a password anywhere, one old breach unlocks your life today.
How to protect yourself
You can't un-leak a breach — but you can make it worthless. Five habits stop almost every account takeover.
Unique password everywhere
Never reuse. A leak from one site should never unlock another. This single habit defeats credential-stuffing.
Turn on 2FA / passkeys
A second factor — an authenticator app or a passkey — blocks logins even when your password is known.
Use a password manager
Let it generate and remember long random passwords, so "unique everywhere" is effortless instead of impossible.
Monitor your exposure
Know the moment your email shows up in a new leak, so you can rotate that password before it's abused.
Rotate old passwords
Retire the passwords you set a decade ago. Assume anything old and reused has already leaked somewhere.
Separate your identities
Use aliases for throwaway signups so one hobby-forum breach can't be tied straight to your primary inbox.
Built on the world's breach record
We don't hack anyone. We aggregate already-public breach intelligence from the same trusted feeds security teams use, so you can check your own exposure in one place.
Troy Hunt's canonical index of known breaches and pastes — which sites were hit, when, and what classes of data were exposed.
An open dataset of breached accounts and password prevalence, used to confirm where an address appears and how common a password is.
A commercial intelligence provider covering thousands of datasets — powering the deep search that pulls your own leaked records live.
Cipher is a defensive, data-subject-access tool. We never store plaintext emails or passwords, every credit-charged search is logged, and you can only ever pull records for an address you prove you control. We are independent and not affiliated with Have I Been Pwned, XposedOrNot, DeHashed, or any other provider.
See where you've been leaked.
Free breach and password checks. Create an account to run a deep search on the address you own.