Mozilla Firefox 83 was released today with a new feature called ‘HTTPS-Only Mode’ that secures your browsing sessions by rewriting URLs to secure HTTPS versions. Windows, Mac, Linux desktop users can upgrade to Firefox 83 by going to Options -> Help -> About Firefox. The browser will automatically check for the new update and install it when available. Mozilla has also fixed 21 vulnerabilities in Firefox 83, including a zero-day vulnerability discovered by Google’s Project Zero, including an active Freetype attack on Google Chrome.
Source: https://www.bleepingcomputer.com/news/software/firefox-83-boosts-security-with-https-only-mode-zero-day-fix/