Open-weight model GLM 5.3 built full Firefox exploit chains with zero human input in under 48 hours

Epoch AI researchers say the widely available AI model GLM 5.3 turned public security fixes into working exploits before updates reached Firefox users. It autonomously compromised six Firefox releases for about $1,000 in API fees each without triggering safeguards from any provider tested. The article Open-weight model GLM 5.3 built full Firefox exploit chains with zero human input in under 48…