Microsoft Build 2026 Previews MDASH — A Multi-Model Agentic Security Scanning Harness With Defender Integration

Microsoft Security Blog·medium signal

At Build 2026 (2026-06-02) Microsoft opened an expanded preview of MDASH, a multi-model agentic scanning harness for securing code, agents, and models across the dev lifecycle, now wired into Microsoft Defender. It targets the gap left by agent-generated code and exposed MCP tooling by running model-driven scans rather than static rules. For builders shipping agent pipelines, it signals that 'scan your agents, not just your code' is moving into mainstream enterprise tooling.