Code & Cipher Tech

Has your email leaked in a data breach?

Am I Exposed? searches your email address against a database of 11+ billion compromised records and gives you your breach count and exposure score — free. The full ($9) report goes deeper: what was exposed in each breach, how serious it is, exactly what to fix first, and how to fix it.

Check an email address

One address at a time. The free check shows your breach count, your exposure score, and your most serious breach.

Searching breach records…
Your email is checked live and never stored, sold, or added to any list. This page keeps no copy of what you type — close the tab and it's gone.
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Exposure score

Where you were exposed

Ranked by threat, most serious first: each severity level is the concrete attack that breach makes possible. A breach means the service was hacked — your information was in what the attackers took.

What to fix first, and how to fix it

Ranked by the threat each fix shuts down — and every step comes with the actual how, not just the what. Do step 1 today; work through the rest this week.

    Also worth 20 seconds

    Check a password you use

    Type a password you currently use anywhere. If it has appeared in a breach, retire it everywhere — attackers try leaked passwords on thousands of sites automatically.

    Checking securely…
    Your password never leaves this device. It's scrambled (hashed) in your browser and only the first 5 characters of that scramble are sent — the same k-anonymity method password managers use. We couldn't store your password if we wanted to.

    A list of breach names isn't a plan

    A raw breach list doesn't tell you what leaked, how bad it is, or what to do next — and most people close the tab and change nothing. The full report turns that list into decisions: what each breach exposed, how serious it is, and what to do about it.

    The free check shows you

    • How many known breaches your email address appears in
    • Your exposure score out of 100 — one number that tells you how urgent this is
    • The name of your single most serious breach
    • Whether a password you use has leaked, with the password check above

    Inside the full report

    • Every breach, explained — what was exposed in each: email only, or passwords, dates of birth, payment details
    • Threat-based severity, with OWASP remedies — the concrete attack each breach enables (credential stuffing, identity theft, phishing), the OWASP Top 10 category named where one applies, mapped to NIST and OWASP guidance
    • What to fix first, and how to fix it — an ordered plan with step-by-step instructions: which passwords to change today, where to turn on two-factor, what you can safely ignore
    • A downloadable report to work through and keep — and the one unlock covers every email address you own

    Two minutes, start to finish

    STEP 01

    Enter your email

    Your address is looked up live against billions of records from 790+ known breaches. Nothing is saved.

    STEP 02

    Get the free diagnosis

    Your breach count, your exposure score out of 100, and your most serious breach named. That's the “oh no” moment — free, no signup.

    STEP 03

    Unlock the fix — $9

    Every breach explained in plain English, plus a ranked action plan: which passwords to change today, where to turn on two-factor, what you can safely ignore. One payment covers every address you own.

    How severity is ranked: by threat, not by vibes

    Every severity level on this page stands for one thing: the concrete attack the exposed data makes possible. The ranking follows the threat categories used in published guidance — NIST SP 800-63B (the U.S. digital-identity standard), the OWASP Top 10 (2021) and its Credential Stuffing Prevention Cheat Sheet, the MITRE ATT&CK catalogue of real attacker techniques, and the FTC's identity-theft guidance. Where a finding matches an OWASP Top 10 category, your results name it — with what it means and what to do about it. The 0–100 score is our plain-English summary of this ranking — the ranking itself works like this:

    Severity What was exposed The threat it enables Grounded in
    Critical Passwords stored in plain text Credential stuffing → account takeover. Attackers read the password as-is and use automated tools to try it against hundreds of other sites. NIST SP 800-63B §5.1.1.2 treats any password found in a breach corpus as compromised. MITRE ATT&CK T1110.004 (Credential Stuffing), T1078 (Valid Accounts). OWASP Top 10 A07:2021 (authentication failures — the stuffing) and A02:2021 (cryptographic failures — the plaintext storage).
    High Social Security number, payment-card, or bank details Identity theft & financial fraud. Accounts opened, loans taken, and claims filed in your name — with data that never expires. FTC IdentityTheft.gov data-breach guidance: this tier starts with credit reports, a credit freeze, and a fraud alert. OWASP Top 10 A02:2021 (Cryptographic Failures) — the category covering sensitive-data exposure.
    High Passwords, weakly protected or hashed Password cracking → credential stuffing. Weak storage falls to offline cracking; cracked passwords are then tried everywhere. OWASP Credential Stuffing Prevention Cheat Sheet and Top 10 A07:2021 (Identification and Authentication Failures); weak hashing is A02:2021. NIST SP 800-63B requires salted, high-cost hashing exactly because weak storage gets cracked.
    Moderate Name, phone, address, or date of birth — no passwords, no financial data Targeted phishing & social engineering. Real personal details are what make a scam message sound like it knows you. MITRE ATT&CK T1566 (Phishing) — the technique built on exactly this kind of personal data.
    Low Email address only Spam & untargeted phishing. No account access, no identity data — junk mail and generic scams. Neither credential stuffing (T1110.004) nor identity theft applies without credentials or identity data; the residual threat is bulk phishing (T1566).

    Read the sources yourself: NIST SP 800-63B — memorized secrets · OWASP Top 10 — A07:2021 Authentication Failures · OWASP Top 10 — A02:2021 Cryptographic Failures · OWASP — Credential Stuffing Prevention · MITRE ATT&CK — T1110.004 Credential Stuffing · FTC — IdentityTheft.gov data-breach steps. One honest note: the Moderate and Low tiers don't carry an OWASP Top 10 label, because the Top 10 ranks weaknesses in web applications — phishing and spam are attacker techniques, so those tiers map to MITRE ATT&CK instead. The password check above applies the same principle NIST sets for services: a password that shows up in breach data is treated as burned, everywhere.

    Built so there's nothing to leak

    A security check that collected your data would be a bad joke. This one is designed so it can't.

    Emails are never stored

    Your address goes straight to the breach database for a live lookup. No account, no database of visitors, no list to sell — ever.

    Passwords never leave your device

    The password check hashes on your device and sends only a 5-character fragment of that hash. The full password — and even the full hash — never travels.

    No trackers, no ads

    This page runs no advertising or analytics trackers. The only outside calls are the two lookups you ask it to make.

    Your report is yours

    The downloadable report is generated in your browser, on your device. Download it, work through it, delete it — your call.

    $9one-time · no subscription

    Unlock the full report

    Buy the full report once on Payhip and your receipt includes a unique license key for this page. Unlock once, then run the full report for every address you own: personal, work, the old one from college you still use for shopping. Come back and re-check whenever a new breach hits the news. One payment, no subscription, no account to manage.

    Get the full report — $9

    Breaches don't stop. Neither should the checking.

    New breaches surface every month, and yesterday's clean email is tomorrow's headline. CipherWatch is the monthly digest from Code & Cipher Tech that tracks what changed in AI safety and data breaches — and what to do about it. Founding members lock in $79/year.

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    Fair Questions

    What does the $9 full report include?

    The $9 full report is the interpretation of your results: what each breach actually exposed, how serious it is, the OWASP Top 10 category behind it where one applies, and what to fix first — plus a downloadable copy to keep. A raw breach lookup hands you names with no meaning attached; the report attaches the meaning, the severity, and the fix.

    Do you store my email address?

    No. Your email is sent once, over an encrypted connection, to the breach database for a live lookup. This page has no server of its own and keeps nothing — refresh the page and every trace of your check is gone.

    How can you check my password without seeing it?

    Your browser scrambles the password using SHA-1 hashing, then sends only the first 5 characters of the scramble. The database returns every leaked password whose scramble starts with those 5 characters (usually hundreds), and your browser checks the full scramble against that list locally. Your password and its full scramble never leave your device.

    My check came back clean. Am I safe?

    It means your address doesn't appear in any known, catalogued breach — genuinely good news. It isn't a guarantee: breaches are sometimes discovered years after they happen, and some stolen data is never published. Keep unique passwords and two-factor on either way, and re-check a few times a year.

    What should I do first if I was exposed?

    Your report ranks it for you, but the universal first move is: change the password on the breached service, and anywhere else you reused it — starting with your email account, because whoever controls your email can reset everything else. Then turn on two-factor authentication.

    Is this professional security advice?

    No — it's educational guidance to help you understand and reduce your exposure, created and reviewed by an ISC2 and CompTIA-certified cybersecurity professional. If you believe an account is actively compromised or money has been taken, contact the provider and, where appropriate, law enforcement.