OpenAI Daybreak Cyber: GPT-5.6-Cyber Unveiled

OpenAI Daybreak Cyber expands controlled AI access for vetted defenders with two tiers (Daybreak Blue and Red) and a specialized model, GPT-5.6-Cyber, which the report credits with assisting in vulnerability research and exploit validation (including reporting CVE-2026-15903). The announcement emphasizes safeguards, identity verification, monitoring and hardware security keys while outlining dual-use risks, recommended defensive controls (sandboxing, least privilege, human review) and the potential for accelerated legitimate security workflows.