Indirect prompt injection arrives through the documents, email, web pages and tool results an AI system reads, not through the user. OWASP's 2026 Top 10 now says no reliable prevention exists and that defence is architectural. This article explains where injected instructions enter, what model-level defences can and cannot do, and the trust boundaries on data that still hold when the model is fooled.
NIST's AI Risk Management Framework is voluntary and ISO/IEC 42001 is certifiable, but they describe the same management cycle. This guide lines the two up, maps each theme to the Microsoft controls that produce evidence for it (Purview, Entra Agent ID, Agent 365, Defender for Cloud and Foundry), and is clear about what no tool can do for you. Checked against NIST, ISO and Microsoft documentation in September 2026.
Microsoft Copilot respects existing permissions, which means it finds existing oversharing faster than any user ever did. This guide explains where excess access comes from, what SharePoint Advanced Management and Microsoft Purview actually do about it, why Restricted SharePoint Search is retiring, and a phased remediation plan, with every status checked against Microsoft's documentation in September 2026.
Microsoft Foundry is no longer a place to call models — it is a platform for hosting, grounding, governing and operating agents. A working architecture guide to prompt and hosted agents, Foundry IQ, Toolbox, MCP and A2A, model choice and Claude, agent identity and RBAC, private networking, evaluation and Agent 365 — with every capability marked GA, Preview or retiring, and the places Microsoft's own documentation contradicts itself named rather than smoothed over.
A research-grounded enterprise reference architecture for autonomous AI agents: agent identity, task-bound authorization, tool and MCP gateways, memory security, runtime containment, observability, and incident response — with an OWASP agentic Top 10 mapping, a bounded-autonomy model, and a 38-control matrix.
AI services are entering organizations through every door at once. Treating them as enterprise platforms — with identity, data boundaries, logging, and governance — is the difference between adoption and exposure.
Can agentic AI actually run security operations? The interesting problem is not the triage decision — it is everything around it: authority, tenant isolation, evidence, approval, and audit. This is the full target architecture, published as something you can click through.