Firefox Extension IDs: Breaking CSRF, Torching Privacy, and Mozilla's Latest Dev Trap
Staring at a 403 error from your own Firefox extension? Blame Mozilla's bizarre ID system that turns simple security into user hell. Here's the ugly truth after 20 years watching browser wars.
⚡ Key Takeaways
- Firefox's per-install UUIDs kill simple CSRF protection via Origin headers, forcing clunky token workarounds. 𝕏
- These UUIDs enable superior user tracking: persistent, unblockable, and invisible across sites. 𝕏
- Devs should prioritize Chrome for extension-server comms; Firefox risks ecosystem exodus like Netscape's fall. 𝕏
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Originally reported by dev.to
