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Home / Tips and Tricks / How do I get data intrusion alerts from Mozilla’s Firefox Monitor?

How do I get data intrusion alerts from Mozilla’s Firefox Monitor?

Firefox logo on a purple background

Data security and privacy have increasingly become the central focus of Mozilla’s Firefox browser. While Mozilla continues to explore privacy-based subscription services, such as the Mozilla VPN, a number of tools integrate into the browser for free.

Below we go through how to use one of Firefox̵

7;s built-in security tools: A data intrusion monitoring service called Firefox Monitor.

What is Firefox Monitor?

Firefox Monitor is a service provided by Mozilla, in conjunction with Have I Been Pwned, to monitor whether your data has been exposed in the event of an online data breach.

Mozilla’s Firefox Monitor service takes your email address and scans it for a library of known data breaches to see if you’ve been affected. A scan from Firefox Monitor searches for public data breaches from 2007.

Similarly, you can sign up to be warned if your email address should be compromised in future intrusions. Best of all, you do not need to use the Firefox browser to take advantage of Firefox Monitor.

How to use Firefox Monitor

Getting started with Firefox Monitor is a simple process. To get started, you need to visit the Firefox Monitor website. You are greeted with an invitation to check an email address against known public data breaches. Go ahead and enter an email address.

This can be done in any browser, with any email address.

Enter an email address for a Firefox Monitor scan

Once you have sent an email address, you will quickly receive the results indicating how many – if any – data breaches the address appears in.


Now, from the scan results page, click the button that says “Notify me of new violations” and you will be prompted to sign in with a Firefox account. Note that you do not need to use Firefox to sign up for a Firefox account.

That said, you need a Firefox account to sign up for continued monitoring and alerts. The site guides you through creating one.

Log in with a Firefox account

After logging in, you will land on an overview page that shows how many data breaches the e-mail account has been associated with. This page will also confirm how many email addresses are actively monitored for future data breaches.

Crime summary page for Firefox Monitor

You will also receive an email with a report on the email address you chose to monitor.

An email confirmation from Firefox Monitor

That’s all. Should the email address you provided get caught in a data breach, you will be warned. Keep in mind, however, that it can take time before data breaches are detected, verified, and added to public databases.

With that said, there may be a time lag between the actual intrusion and when Firefox Monitor alerts you.

Unsubscribe from Firefox Monitor

If you decide that you no longer want to be part of Firefox Monitor, unsubscribing is a fairly simple process. To do so, you must visit the Firefox Monitor website and log in with your Firefox account.

When you are logged in, you will see your profile icon at the far right of the screen next to a grid menu. Click on your profile icon to get to a drop-down menu. Click “Settings” in the drop-down menu to open the Firefox Monitor settings.


Here are a few options for receiving alerts from Firefox Monitor, as well as an option for adding a different email address. At the bottom of the page, you’ll see a “Delete Firefox Monitor” option that lets you choose not to receive future emails from Firefox Monitor.


When you click the “Remove Firefox Monitor” button, you will be prompted to confirm the selection. Once done, you will deselect it and return to the Firefox Monitor homepage. Your Firefox account will still be active and you can sign up at any time.

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