Posted in

Intune and Defender for Endpoint: New Selective Response Preview

by ailona•
intune
This shift represents a fundamental change in how we define an “endpoint.” We are moving from managing human-operated devices to managing “agentic” endpoints.

The convergence of AI agents and endpoint security is no longer a roadmap item; it is the current operational reality for the modern enterprise. As we integrate autonomous agents into core business workflows, the role of Intune is evolving from simple device management to providing the secure, governed runtime environments necessary for AI to operate without compromising the corporate perimeter.

What’s Happening

Microsoft is aggressively expanding its security and AI orchestration layer, most notably through the general availability of Microsoft 365 E7 and Agent 365. These releases unify Copilot, Entra Suite, and a new governance framework specifically for AI agents. To support this, Windows 365 for Agents is now in public preview, providing Intune-managed Cloud PCs that allow AI agents to interact with legacy UI-based applications securely. On the security front, Microsoft is hardening the infrastructure with an open-sourced Azure Integrated HSM stack (FIPS 140-3 Level 3) and introducing “selective response” actions in Defender for Endpoint to protect Tier-0 assets like domain controllers. Simultaneously, the ecosystem is becoming more interoperable, evidenced by a new streaming bridge that ingests Amazon Security Lake data into Microsoft Sentinel via AWS Lambda and Azure Event Hubs, reducing telemetry latency for multi-cloud environments.

Why It Matters

This shift represents a fundamental change in how we define an “endpoint.” We are moving from managing human-operated devices to managing “agentic” endpoints. By leveraging Intune to govern Windows 365 for Agents, IT teams can apply the same conditional access and compliance policies to an AI agent as they do to a remote employee. Architecturally, the move toward hardware-enforced security via the open-sourced HSM stack addresses the critical risk of memory-based key exfiltration, moving trust from vendor promises to verifiable silicon. Furthermore, the introduction of selective response for high-value assets acknowledges that a “one size fits all” automated remediation strategy is too risky for Tier-0 infrastructure, where an incorrect automated isolation could trigger a catastrophic wide-scale outage.

The Azure Integrated HSM shift moves cryptographic trust from vendor assertions to verifiable silicon, eliminating key exfiltration risks through hardware-enforced security.

What Others Are Saying

Industry sentiment reflects a growing urgency to secure the “AI-to-Agent” pipeline. The release of the Work IQ API is being viewed as a critical bridge, allowing developers to build agents that utilize Copilot’s reasoning without needing to manually wire raw data permissions. Meanwhile, the threat landscape remains volatile; Microsoft Defender Research recently flagged a sophisticated AiTM (Adversary-in-the-Middle) campaign targeting 35,000 users. This campaign, which bypasses MFA using “code of conduct” lures and CAPTCHAs, underscores why the industry is pivoting toward the zero-trust frameworks embedded in the new E7 suite and the rigorous identity controls provided by the Entra Suite.

The Bigger Picture

We are seeing a broader industry trend toward “Transparent Security” and “Agentic Governance.” By open-sourcing HSM firmware and launching the ARC initiative in Kenya to stress-test human decision-making during AI-enabled breaches, Microsoft is acknowledging that technical tools alone are insufficient. The goal is a holistic ecosystem where AI agents are not isolated bots but first-class corporate citizens—subject to Purview eDiscovery for legal compliance, managed by Intune for endpoint security, and monitored by Sentinel for cross-cloud telemetry. This integrates the entire lifecycle of an AI interaction, from the hardware root of trust to the final audit log.

What IT Pros Should Do

1. Audit Tier-0 assets and implement “selective response” packages in Defender for Endpoint to prevent accidental automated isolation of critical servers.

2. Evaluate the Windows 365 for Agents preview to transition AI agents from unmanaged scripts to Intune-governed Cloud PC environments.

3. Review the updated RemoveDefaultMicrosoftStorePackages policy for Windows 11 24H2 to prune unnecessary MSIX/APPX apps and reduce the attack surface.

4. Configure Microsoft Purview eDiscovery workflows to ensure Copilot prompts and agent responses are being preserved for legal and compliance requirements.

Sources