> Breach data provided by Have I Been Pwned<p>So it's exactly the same as <a href="https://haveibeenpwned.com/" rel="nofollow noreferrer">https://haveibeenpwned.com/</a>, except instead of giving hibp your email, you have to create a "Firefox Account".<p>I guess it comes down to whose 4000-word terms of service you like better.
This same breach info shows up if you open up firefox's password manager (about:logins) and have a saved account.<p>It's a little less useful, since it won't shoot an email your way. But it's super handy to have a list of accounts/passwords/sites you need to change.