GPT-6 Cyber found unknown high-severity vulns in hardened Firefox codebase
adonis_singh · x · 2026-11-06
Mozilla Distinguished Engineer Brian Grinstein confirmed that GPT-6 Cyber, described as a world-class cyberdefense model, uncovered previously unknown high-severity vulnerabilities in Firefox — a codebase that entered 2026 as one of the world's most hardened and scrutinized, even after further hardening with multiple generations of frontier models. It also identified architectural improvements and helped ship fixes to millions of users.
- Commenters note the implication: much of the world's infrastructure hasn't undergone anywhere near this level of hardening, so the model's potential impact there is concerning
- The poster claims this model will likely never be made available to the public
More from Models
- OpenAI Launches GPT-6 Cyber for Security Research; Experts Warn Bug Hunting Isn't Security — moyix · 2026-11-06
- Ant's Ling-3.2-flash: 560B-Parameter Multimodal Model Claims to Beat Claude Opus 5 — realmrfakename · 2026-11-06
- OrcaCyber-Nano-1.0, a Qwen finetune, praised as frontier-adjacent on 24GB VRAM — JackMasterN1 · 2026-11-06
- Grok apologizes for unexpected Cursor charge as users question AI billing reliability — alexcovo_eth · 2026-11-06
- 39 LLMs tested on Rubik's cubes with no tools: only 2 solve a 20-move scramble — JeremyCMorgan · 2026-11-06
- Ampersand Claims 92.2% on SWE-bench Pro HARD-51 at 70% Lower Cost — niloofar_mire · 2026-11-06