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Revision Information
  • Revision id: 258673
  • Created:
  • Creator: Lucas Siebert
  • Comment: Updated content for the Firefox Monitor refresh V1. Updated instructions, updated screenshots, removed sections about adding/deleting email addresses (they'll be placed in a separate article).
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: lsiebert
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: lsiebert
Revision Source
Revision Content
Warning: The latest version of Firefox Monitor is being gradually rolled out and may not yet be available to you. Stay tuned for further updates.

Firefox Monitor is a data breach notification service offered by Mozilla that warns you if your online accounts have been involved in a data leak. Using the Have I Been Pwned database, Firefox Monitor keeps track of known data breaches and notifies you if your online accounts are compromised, providing guidance on how to proactively protect yourself going forward.

Check if you've been part of a known breach

To see if your online accounts have been exposed in a data breach:

  1. Open your web browser and go to monitor.firefox.com.
  2. Enter your email address into the designated field.
  3. Click Check for breaches to initiate the search.
    Firefox Monitor website refreshed layout
  4. From here, you can browse for specific breaches. Click Sign in to resolve breaches to sign in to your Firefox Account. If you don't have one, create it before proceeding.
    Resolve breaches with Firefox Monitor
  5. After signing in, scroll down to see details of your active breaches.
    Active breaches

Now that you're aware of the breaches involving your online accounts, check Resolve breaches with Mozilla Monitor to learn how to take proactive actions and mitigate the damage that could come from them.

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