Softpedia says: > To see if your e-mail has been part of a data breach you have to go to monitor.firefox.com and enter your password. Which sounds stupid. The [Mozilla blog](https://blog.mozilla.org/blog/2018/09/25/introducing-firefox-monitor-helping-people-take-control-after-a-data-breach/) linked to in the article says: > Visit monitor.firefox.com and type in your email address. Which sounds less stupid.