Cato Networks has joined the OpenAI Daybreak Cyber Partner Program, extending the companies' existing work in cyber defence. The partnership focuses on bringing OpenAI's cyber tools into security workflows used by corporate customers through external partners, concentrating on defensive uses including vulnerability discovery, prioritisation, and faster protection against newly disclosed flaws. The work also covers joint safety and abuse-prevention standards, aiming to support controls that monitor and prevent unauthorised activity when advanced AI models are used in operational security settings. Cato has already worked with OpenAI through the Trusted Access for Cyber programme, where the companies explored ways to improve the discovery and ranking of common vulnerabilities and exposures. Cato pointed to a recent internal milestone, saying it cut time-to-protect for newly disclosed vulnerabilities to 45 minutes using agentic CVE mitigation, covering vulnerability analysis, protection generation, validation, and global deployment. The Daybreak programme brings together organisations testing how frontier AI models can support cyber defenders in real-world environments.