Tech
Firefox Security Settings: What They Do and How to Harden Them
Firefox ships with robust security defaults, but understanding them helps you make informed decisions about what to keep, what to change, and what to add.
What Firefox Protects by Default
HTTPS-First Mode (Firefox 83+)
Firefox now tries HTTPS first for every connection. When you type a domain without specifying http://, Firefox upgrades to HTTPS automatically. If the site doesn't support HTTPS, Firefox falls back to HTTP with a visual indicator in the address bar.
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