Microsoft launches AI cybersecurity model, agentic defense platform to cut enterprise security costs

Microsoft opened a new front in the AI security wars on Monday, unveiling its first custom-built cybersecurity model and a sweeping agentic defense platform — and making an argument that could reshape how enterprises buy AI: the future belongs not to the biggest model, but to the cheapest one that's good enough, routed intelligently. The company announced MAI-Cyber-1-Flash , a compact security model developed in-house by its Microsoft AI (MAI) division, embedded inside MDASH , Microsoft's multi-