How to Check If Your Email Was Exposed in a Data Breach

Your email address is the key to your digital life. If it appeared in a data breach, attackers have your login credentials, personal details, or both. Here is how to find out and what to do about it.

Last updated March 10, 2026

> What to do

  1. 1

    Run a breach scan on your email

    Check your email against known breach databases. EXPOSE scans HIBP, data brokers, social platforms, and public records in one search. A free scan shows your exposure score and which categories of data are at risk.

  2. 2

    Change passwords on breached accounts

    If your email was in a breach, the password you used on that site is compromised. Change it immediately. If you reused that password anywhere else, change it there too.

  3. 3

    Enable two-factor authentication

    Turn on 2FA on every account that supports it. Use an authenticator app like Authy or Google Authenticator. Avoid SMS-based 2FA — SIM swapping makes it unreliable.

  4. 4

    Check what accounts are tied to your email

    Attackers use breached emails to find other accounts you own. EXPOSE checks 3,000+ sites for accounts linked to your email address, so you know exactly what is out there.

  5. 5

    Set up a password manager

    Use a password manager to generate and store unique passwords for every account. If one password leaks, only that single account is affected.

> Why email breaches matter

Your email is the master key. Password resets, account recovery, two-factor codes — they all go to your inbox. Once an attacker has your email and password from one breach, they try that combination on banks, crypto exchanges, and shopping sites using automated credential stuffing tools. The success rate is low per attempt, but at scale it works. The 2025 credential dump contained 16 billion login pairs. Even a 0.1% hit rate means millions of compromised accounts.

> SCAN_NOW

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//public sources | accuracy not guaranteed | informational only

Frequently Asked Questions

How often should I check for breaches?▼
At minimum, check after any major breach makes the news. With an EXPOSE subscription, monitoring runs automatically every month and alerts you to new exposures.
My email was breached years ago. Am I still at risk?▼
Yes. Old breach data gets compiled into new collections and resold. If you have not changed the password since the breach, your account is still vulnerable.
Does deleting an account remove my data from breaches?▼
No. Once data is leaked, it exists in criminal databases permanently. Deleting the account prevents future breaches but does not undo past ones.
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