Microsoft Announces New Tools to Secure Code, Agents, and AI Models at Build 2026

Microsoft is taking AI security far beyond its chatbots. Ahead of Build 2026, the company had confirmed that MDASH would be available in an expanded preview. For those unaware, that’s a new agentic security system designed to hunt down exploitable software vulnerabilities before attackers get the chance.

Unlike traditional security tools that often overwhelm teams with alerts, MDASH takes a different approach. Microsoft says the system coordinates more than 100 specialized AI agents and multiple AI models to analyze codebases, validate threats, and determine whether a vulnerability can actually be exploited in the real world.

Microsoft wants to cut through security noise

One of the biggest problems facing security teams today is separating genuine threats from endless false positives. Microsoft believes MDASH can help solve that issue. The company says its new platform uses an ensemble of AI models rather than relying on a single foundation model. Some models focus on deep reasoning while others handle large-scale analysis tasks. Combined with Microsoft’s massive security telemetry network, MDASH reportedly processes signals at enormous scale to identify risks that matter most.

Microsoft also revealed that MDASH recently achieved a CyberGym benchmark score of 96.55%, highlighting how quickly the system is improving. Accenture, PwC, and Insight are already involved in early testing and development efforts.

Build 2026 shows Microsoft’s bigger security strategy

That being said, MDASH wasn’t the only security announcement at Build 2026. Microsoft also expanded integrations between Defender and GitHub Code Security, introduced new tools for securing AI agents, expanded Microsoft Purview protections, and unveiled additional safeguards designed to verify AI models before deployment.

As AI-generated code becomes increasingly common, Microsoft appears to be betting that AI will also become one of the most important tools for defending software in the years ahead.