Microsoft is adding a new Edge feature that will be familiar to Chrome and select other browser users: an alert when your password is compromised. Called Password Monitor, the security feature is designed to alert users when their password has been discovered as the result of a third-party breach, such as from an old forum you used to post on that was later compromised.

According to Microsoft, Edge’s new Password Monitor won’t reveal your password to Microsoft as part of the alert.
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https://www.slashgear.com/microsoft-edge-is-the-latest-browser-to-get-leaked-passwords-warning-21656249/