Thursday, November 06, 2025
All the Bits Fit to Print
Detailed comparison of Firefox and Chromium's security architectures and mitigations
A detailed analysis reveals that Firefox’s security model is weaker than Chromium’s due to less effective sandboxing, exploit mitigations, and process isolation. Despite Firefox’s strong privacy reputation, its architecture exposes it to more potential exploits and sandbox escapes.
Why it matters: Firefox’s weaker sandboxing and mitigations increase risk of exploitation, potentially compromising user security compared to Chromium.
The big picture: Chromium’s mature, granular multi-process architecture and robust mitigations set a higher security standard for modern browsers.
The stakes: Using Firefox for sensitive activities may expose users to greater attack surface and unpatched vulnerabilities.
Commenters say: Many express surprise at Firefox’s security shortcomings and consider switching to Chromium-based browsers for improved protection.