How to Check If Your Data Was Leaked in a Breach

Data breaches happen constantly. Companies you have accounts with get hacked, and your personal data ends up in criminal databases. The only way to know if you were affected is to check. Here is how to find out what was leaked and what to do about it.

Last updated March 18, 2026

> What to do

  1. 1

    Scan your email address

    Your email is the fastest way to check for breaches. EXPOSE scans your email against known breach databases including Have I Been Pwned, which tracks over 800 breached sites. You will see which breaches included your data and what types of information were exposed.

  2. 2

    Check what types of data were leaked

    Not all breaches are equal. Some leak only email addresses. Others include passwords, phone numbers, physical addresses, SSNs, or financial data. The type of data exposed determines your risk level and what actions you need to take.

  3. 3

    Change compromised passwords immediately

    If a breach included your password (even a hashed one), change it on that site and every other site where you used the same password. Credential stuffing attacks test leaked passwords against thousands of sites automatically. One reused password can compromise dozens of accounts.

  4. 4

    Enable two-factor authentication

    Turn on 2FA for every account that supports it, starting with email, banking, and social media. Use an authenticator app, not SMS. Even if your password is leaked, 2FA stops most attackers from getting in.

  5. 5

    Check for accounts you forgot about

    EXPOSE scans 3,000+ platforms to find accounts linked to your email. Old accounts on sites you forgot about are often the weakest link. They use old passwords you no longer remember and don't have 2FA enabled.

> Why data leaks keep happening

Companies collect more data than they can protect. Every service you sign up for stores your email, password, and whatever personal info you provided during registration. When that company gets hacked (and they all do eventually), that data ends up on criminal marketplaces. Over 16 billion login credentials have been leaked in known breaches as of 2025. The National Public Data breach in 2024 exposed SSNs for nearly every American adult. These leaked datasets get combined, enriched with additional data, and resold for years after the original breach.

> SCAN_NOW

Check your email against breach databases now

EXPOSE scans breach databases, data brokers, and 3,000+ platforms to show you exactly what data has been leaked.

* At least one email required (max 3).

Zero-Storage Promise

We don't store your data. Your information is processed in real-time and immediately discarded. You're the customer, not the product.

//public sources | accuracy not guaranteed | informational only

Frequently Asked Questions

How do I know if my SSN was in a data leak?▼
Breach databases like HIBP track which data types were exposed in each breach. If you had an account with a company that was breached and that breach included SSNs, yours was likely exposed. An EXPOSE scan shows you which breaches affected you and what data classes were included.
Can leaked data be removed from the internet?▼
No. Once data is leaked in a breach, it exists in criminal databases permanently. You cannot recall it. The only response is to change passwords, enable 2FA, freeze credit if SSNs were exposed, and monitor for misuse.
How many data breaches happen per year?▼
Thousands. The Identity Theft Resource Center tracked over 3,200 publicly disclosed breaches in 2024 alone. Many more go unreported. If you have been online for more than a few years, your data has almost certainly been in at least one.
Should I use a different email for every account?▼
Using email aliases (like Gmail's + addressing or Apple's Hide My Email) limits the damage from any single breach. If one alias is compromised, your other accounts are unaffected. It also helps you identify which service leaked your data.
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