Adversa AI May 2026 Roundup: Microsoft Agent Governance Toolkit Ships with Critical Auth Primitives Having Zero Production Callers

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Adversa AI's May 2026 agentic security roundup flags that Microsoft's new Agent Governance Toolkit shipped with critical authentication primitives containing zero production callers, meaning agent identity governance checks can be trivially bypassed via caller-controlled input. The roundup also documents Claude Code shell deny rules silently failing after 50 subcommands, and SlowMist's pioneering 'agent-facing' defense paradigm where security guides are designed to be read by the AI agent itself.