Firefox will soon flag sites that have been hacked

Firefox has having a good run right now, having just released its much speedier and better-looking Quantum browser. It's now working on a new feature that security fans are bound to like: It will warn you if you're visiting a site that has suffered a data breach. Firefox is working on the feature in collaboration with "Have I Been Pwned," the popular site that can check your email and tell you if your credentials have been stolen by hackers.
Read more: https://www.engadget.com/2017/11/23/firefox-notification-breached-sites/?source=Snapzu