To allow a security analyst to use the Microsoft 365 security center and also approve or reject pending remediation actions generated by Microsoft Defender for Endpoint, while adhering to the principle of least privilege, you must assign two complementary roles:
* In Microsoft Defender for Endpoint, assign the Active remediation actions role. This role explicitly gives permission to take response actions (such as isolation, quarantine, etc.) or to approve or reject pending remediation tasks. Microsoft documentation states that when taking response actions on a device, "you must have at least the Active remediation actions role assigned." Microsoft Learn
* In Azure AD (or Microsoft Entra), assign the Security Reader role. This role grants read-only visibility into the security configuration and alerts in the Microsoft 365 security center without elevating the analyst to full security administration. This ensures the analyst can see what's happening in the security environment, but not make broad configuration changes.
Here's why those roles are correct and why the others are not:
* The Active remediation actions role is narrowly scoped to remediation operations, which is exactly what is needed to approve or reject pending actions. Any broader role (like Security Administrator) would exceed the principle of least privilege.
* The Security Reader role allows the analyst to navigate the Microsoft 365 security center (view incidents, alerts, reports) but does not grant write-level permissions that are unnecessary for their role.
* The Security Administrator role (option C) would grant too many permissions-not least privilege- though it might allow the needed actions, it is overly permissive relative to what is needed.
* The Compliance Data Administrator (option A) is unrelated to remediation within Defender or endpoint actions; it is designed around compliance and data governance.
Additionally, Microsoft's role-mapping between Defender XDR unified RBAC and legacy roles confirms that the Active remediation actions permission is mapped to the "Response (manage)" capability in the unified RBAC model. Microsoft Learn Together, assigning Active remediation actions (in Defender for Endpoint) and Security Reader (in Azure AD/Entra) gives the minimal necessary access: ability to view security data and approve or reject remediation actions, without over-privileging the analyst.