Microsoft Security Copilot

Security Copilot 2026: Agentic SOC Architecture

As of Q1 2026, the architecture has transitioned from a stateless chat model to a stateful Agentic Framework. It utilizes Microsoft Agent 365 for unified governance, allowing AI agents to execute autonomous workflows with full identity-based auditing 📑.

Orchestration & Logic Layer (GPT-5.2 Powered)

The reasoning engine, built on GPT-5.2, handles high-complexity causal analysis of multi-stage attacks across the Microsoft Security Graph 📑.

• M365 E5 Entitlement: Native inclusion provides 400 SCUs per month per 1,000 licenses, enabling 'zero-cost' baseline automation for enterprise tenants 📑.
• Microsoft Foundry Integration: Advanced users leverage Foundry (formerly Azure AI Foundry) for RAG-based grounding and custom security agent development 📑.
• Autonomous Remediation: Specialized agents in Defender and Entra perform real-time isolation of compromised entities based on reasoning-ahead logic, reducing MTTR by up to 80% 🧠.

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Governance & Data Sovereignty

AI agents are now treated as first-class identities within Entra ID, subject to the same Conditional Access and Zero Trust policies as human analysts 📑.

• Agent 365 Control Plane: Provides a centralized registry and visibility into 'shadow agents' and custom security workflows across the organization 📑.
• Tenant-Level Privacy: All processing remains within the Azure regional boundary, with automated PII redaction active by default for all telemetry analysis 🧠.

Evaluation Guidance

Architects must audit the 'Reasoning Depth' settings in Foundry to balance SCU consumption against investigation accuracy. Organizations should validate their Agent 365 Registry to ensure no unauthorized third-party agents are interacting with sensitive MDTI feeds. Monitor the E5 SCU quota daily to avoid the $6/SCU overage charges during peak incident periods 📑.