OpenAI Builds ‘Defense Factory’ as AI Agents Gain Ability to Chain Cyber Exploits

OpenAI unveiled a Defense Factory using AI agents to continuously discover, validate, patch, and verify vulnerabilities, warning the defender's window against agentic attackers is shrinking.

OpenAI describes a Defense Factory workflow where AI agents integrate source control, scanners, issue trackers, and secret stores to discover, reproduce, patch, and verify vulnerabilities under human oversight. The approach responds to agentic attackers that can retain knowledge across sessions and chain vulnerabilities into multi-stage attack paths faster than human triage can respond, which OpenAI calls a shrinking defender's window. During an internal security sprint involving 250+ people across 100+ service areas, agents closed 53 urgent or high-priority issues on day one, achieved 90.6% ownership-routing acceptance, cut 37% of findings as duplicates, and produced Codex-generated patches with a 0.53% rollback rate. Runtime validation reduced false positives to 0.81%, and each agent operates in isolated, reproducible environments with a control plane for policy and credentials.