Free Data Breach Checker 2026 — Is Your Email Compromised?

Check If Your Email Has Been Exposed in a Data Breach

Since 2013, over 16 billion records have been exposed in publicly reported data breaches. Yahoo, LinkedIn, Facebook, Equifax, Adobe — the list keeps growing. If you have used the internet for more than a few years, there is a high probability that at least one of your accounts has been compromised.

A data breach happens when unauthorized parties gain access to a company’s database containing user information. The stolen data — email addresses, passwords, social security numbers, payment details — often ends up on dark web marketplaces where criminals use it for credential stuffing (testing leaked passwords on other sites), identity theft, and targeted phishing attacks.

Our free breach checker scans your email domain against a curated database of 50+ major confirmed breaches. It runs entirely in your browser — your email never leaves your device. Enter your email below to get your risk score in under 3 seconds.

How Our Scoring Methodology Works

Our breach checker assigns a risk score from 0 to 100 based on two factors: domain-level exposure (whether your email provider itself has been breached) and cross-platform exposure (breaches at major services where most internet users have accounts). Each breach is weighted by severity — a breach exposing SSNs and financial data scores higher than one exposing only email addresses.

Privacy Pledge

Your email address is processed 100% client-side using JavaScript. It is never transmitted to any server, API, database, or third party. You can verify this yourself by opening your browser’s developer tools (F12 → Network tab) and confirming that no requests contain your email. We built this tool with privacy as a non-negotiable requirement.

For a Deeper Verification

This tool performs domain-level matching. For exact account-level verification across 800+ breaches, run a deep check at haveibeenpwned.com — the gold standard maintained by security researcher Troy Hunt.

5 Steps to Take After a Breach

1. Change compromised passwords immediately — start with any account that shares the same password as the breached service.
2. Enable two-factor authentication — use an authenticator app (not SMS) for critical accounts like email and banking.
3. Use a password manager — tools like NordPass generate and store unique passwords for every account.
4. Monitor your credit — if SSN or financial data was exposed, freeze your credit at all three bureaus (free and takes 15 minutes).
5. Encrypt your connection — use a VPN like NordVPN on public Wi-Fi to prevent credential interception.

Related Security Guides

Protect yourself further with these in-depth guides:

• How to Set Up Passkeys in 2026 — replace passwords entirely in under 5 minutes.
• The Complete Cybersecurity Checklist for Freelancers — 2026 edition with actionable steps.
• How to Secure Your Home Network for Remote Work — protect every device on your network.