On Windows 10, Microsoft Edge has a built-in password monitor feature that can check any saved password against a large database of stolen credentials to determine if any of them have been already compromised. If one or more of your passwords have been part of a leak, the feature will alert you and recommend changing them to keep your accounts secure.
At the time of this writing, the password monitor feature is not yet available broadly. As a result, you will need to install the version available in the Beta Channel.
How to check for password leaks manually on Microsoft Edge
To use Microsoft Edge to find out if one of your passwords has been compromised, follow these steps.
Open Microsoft Edge.
Click the Settings and more (ellipsis) button in the top-right corner.
Select the Settings option.
Click on Profiles.
Under the “Your Profile” section, select the Password option.
Turn on the Show alerts when passwords are found in an online leak toggle switch.
Click the “View results” option to enter the “Fix leaked passwords” page.
Click the Scan now button.
Once you complete the steps, if a saved password has been found in an online leak, Microsoft Edge will list them on the page with a “Change now” option to update the online service information.