Block unsanctioned local agents on managed endpoints
Implementation Effort: Low – Blocking is a single toggle in the Shadow AI page that automatically creates and propagates an Intune policy to all managed Windows devices.
User Impact: Medium – Users running blocked agents on managed devices will have those agents prevented from executing; affected users need guidance on sanctioned alternatives.
Overview
Detecting local AI agents on managed endpoints establishes visibility, but visibility without enforcement leaves the organization in a monitoring-only posture. After the security team reviews Shadow AI detection results and identifies which local agents are unsanctioned, the next step is to prevent those agents from executing on managed devices. This is a deliberate enforcement decision — not every detected agent warrants blocking, and the organization must determine which agents represent unacceptable risk based on their data access capabilities, compliance implications, and whether sanctioned alternatives exist.
The Shadow AI page in the Microsoft 365 admin center provides a blocking control that, when enabled, creates a Microsoft Intune policy that automatically propagates to all managed Windows devices enrolled in Intune. The policy blocks common execution paths for the targeted agent. For example, blocking OpenClaw creates a policy named "A365 - Block OpenClaw" that prevents the agent from running. The policy propagation time depends on the organization's Intune configuration and can range from 15 minutes to 8 hours. The Intune policy can also be further customized in the Intune admin center to add additional controls beyond the default blocking behavior.
This supports Use least privilege access by restricting endpoint capabilities to only sanctioned AI agents, preventing users from running tools that operate outside the organization's governance perimeter. It supports Assume breach by eliminating execution paths that threat actors could exploit — a compromised endpoint with an unsanctioned local agent provides an additional attack surface that the security team cannot monitor, investigate, or contain through standard incident response tools. Without blocking controls, detection results accumulate as informational findings while unsanctioned agents continue operating on managed devices, accessing local files, executing code, and potentially exfiltrating data through channels that no cloud-based security control can observe.