OpenAI Expands Daybreak With GPT-5.5-Cyber to Help Defenders Patch Security Flaws

OpenAI is expanding its Daybreak initiative with GPT-5.5-Cyber, an AI model designed to accelerate vulnerability discovery and patching within software. This expansion includes a new plugin for streamlining the vulnerability patching process and a partnership with Trail of Bits to bolster open-source security. The initiative addresses the growing challenge of managing an increasing volume of vulnerabilities, particularly as AI models empower threat actors, and highlights several recently discovered vulnerabilities across diverse systems, including Linux, OpenBSD, FreeBSD, and browsers like Chrome and Safari.