Microsoft (NASDAQ:MSFT) introduced MAI-Cyber-1-Flash, its first cybersecurity-specific model, built into MDASH, the multi-agent system Microsoft uses to hunt down and patch software vulnerabilities. Paired with GPT-5.4, the combination scored 96% on CyberGym, the industry's leading vulnerability-detection benchmark, topping rivals from Anthropic, Google, and OpenAI by a wide margin. MDASH running MAI-Cyber-1-Flash and GPT-5.4 scores 96% on CyberGym, putting Microsoft 12 points ahead of Anthropic's Mythos. The new model shoulders about 90% of everyday security tasks on its own, reserving the pricier GPT-5.4 for the toughest 10%, a routing trick Microsoft says delivers a 50% cost cut versus its previous MDASH offering. Microsoft says its systems generate over 100 trillion security-related signals daily across 1.6 million customers. The launch lands alongside Project Perception, a new agentic security platform. Microsoft's roughly 27% stake in OpenAI is now valued at about $135 billion, and its commercial backlog stands at $627 billion. Trust is built into every layer of the system through security-first calibration, evaluations by Microsoft's AI Red Team, automated and expert-led adversarial exercises, and an independent third-party assessment. MDASH provides enterprise controls including Role-Based Controls, tenant isolation, encryption, auditability, and sandboxed