Integrated data breach notifications
https://www.bleepingcomputer.com/news/software/firefox-70-released-with-in-browser-data-breach-notifications/
Mozilla has officially released Firefox 70 for Windows, Mac, and Linux and with it comes additional protections for user's privacy and passwords. This includes the new social tracking protection feature, a new Privacy protections report, and an integrated data breach notification service for your saved logins.
With the release of Firefox 70, the other development branches of Firefox have also moved up a version. This brings Firefox Beta to version 71 and the Nightly builds to version 72.