> ## Documentation Index
> Fetch the complete documentation index at: https://support.locker.io/llms.txt
> Use this file to discover all available pages before exploring further.

# What Is a Data Breach Scanner?

> The Data Breach Scanner checks whether your email has appeared in any known data breaches.

The **Data Breach Scanner** is a feature that checks whether your email address has been exposed in any publicly reported data breaches.

## How it works

1. Enter the email address you want to check.
2. Locker cross-references your email against a database of known breaches.
3. If your email is found to be exposed, Locker displays the related breaches along with detailed information.

## If your email is found in a breach

* **Change your password immediately** for the affected accounts.
* **Enable two-factor authentication (2FA)** to strengthen your security.
* **Use strong, unique passwords** for each account — use Locker's password generator.

<Note>
  The Data Breach Scanner is available on both the Web Vault and mobile apps.
</Note>