[2021] — Tamper Firefox

—if you value privacy over convenience. A properly tampered Firefox blocks more trackers than Chrome with 10 extensions. It resists fingerprinting better than Brave (though Brave is competitive). And crucially, it's not based on Chromium, meaning Google has zero control over its future development.

Last updated: 2026-04-14. Firefox version 130+. tamper firefox

"Tampering" with Firefox—modifying its internal settings beyond what the standard options menu allows—unlocks its true potential as a privacy fortress. This guide will walk you through the surgical tweaks that transform a standard Firefox install into a hardened, user-controlled machine. —if you value privacy over convenience

: Testing if a server properly validates data or if it relies solely on easily-bypassed front-end validation. it's not based on Chromium