Firefox Monitor
Firefox Monitor warns you if your online accounts were involved in a known data breach. See if your information was exposed in a data breach, learn how to take action to better protect your online accounts, and get alerted if your information appears in a new breach. You can enroll multiple email addresses for breach alerts from a single Firefox Account.
- See also Firefox Lockwise - Alerts for breached websites about alerts in Firefox for saved logins and passwords exposed in known data breaches.
Table of Contents
See if you've been part of a known breach
To see if your online accounts have been exposed in a known data breach:
Click the Firefox Account icon in the toolbar.
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- Click to open the Firefox Monitor report page.
- Click to sign in to your Firefox Account.
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- Click the tab on the new page.
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From here, you can browse or search for specific breaches.
To see if your online accounts have been exposed in a known data breach, visit https://monitor.firefox.com/ and enter your email address. You can see what personal data was compromised and when. This basic search will surface most data breaches, but not ones that contain sensitive personal information.
Monitor your email for future breaches
Firefox Monitor can send you breach notifications so you can take actions to protect your account. To sign up for notifications:
Click the Firefox Account icon in the toolbar.
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- Click to open the Firefox Monitor report page and sign in if you haven't already.
- Click in the E-mails section.
- Add a checkmark next to your desired setting.
- Send breach alerts to affected email address to send emails to the affected address.
- Send breach alerts to [email address] to send all alerts to a designated address even if it's not linked to your Firefox Account.
If you want to receive Firefox Monitor alerts and your complete breach summary (which may contain breaches with sensitive information), create a Firefox Account:
- Visit https://monitor.firefox.com/.
- Select and create a password.
- Check your email for a verification link.
This link expires in 24 hours. After verifying your address, you’ll be able to see your complete breach summary on your Firefox Monitor dashboard. You’ll receive an alert if your email address appears in a new data breach.
Already have a Firefox Account? Sign in via https://monitor.firefox.com/ to see your summary of past breaches and automatically opt in for breach alerts. Firefox Monitor will send you an email if your information appears in a future data breach.
Monitor multiple emails for new breaches
In addition to your primary Firefox Account email, you can get breach alert sent to other email addresses. You don't have to link these email addresses to a new Firefox Account.
- Log in to your Firefox Account via https://monitor.firefox.com/.
- Select to access your Monitor Preferences.
- Enter the new email address in the email field.
- Select .
- Check to see if a verification link was sent to that email (this link expires in 24 hours).
After verifying your address, you’ll see another breach summary on your dashboard. You’ll receive an alert if this email address appears in a new data breach.
Receive desktop browser alerts
If you use the desktop version of Firefox and visit websites in our list of breaches, you’ll receive an alert in your browser. This directs you to Firefox Monitor where you can see if your account is at risk. You will not see these alerts more than once per website.
When you browse a site with a known data breach, you’ll receive a message similar to this:
You can do any of the following from this prompt:
- Select to see if your information was exposed when this website was breached.
- Select to ignore the alert.
- Select the drop-down arrow next to Dismiss and then select to dismiss all Firefox Monitor alerts on all sites.
Frequently asked questions
Have questions? Firefox Monitor - Frequently asked questions covers many popular questions. If your question isn’t covered, go to Get Community Support to ask the community for help.