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-agent harness for finding and fixing software vulnerabilities. Together, the company says, the system scores 96% on CyberGym — a benchmark measuring how well AI systems reason over large codebases to find real vulnerabilities — beating frontier models including Mythos, Gemini, and GPT, while cutting costs roughly in half compared to Microsoft's own current production configuration.
Alongside the model, Microsoft introduced Project Perception, an agentic security system that coordinates "red...
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