Azure security baseline for Microsoft Defender for Cloud
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This security baseline applies guidance from the Microsoft cloud security benchmark version 1.0 to Microsoft Defender for Cloud. The Microsoft cloud security benchmark provides recommendations on how you can secure your cloud solutions on Azure. The content is grouped by the security controls defined by the Microsoft cloud security benchmark and the related guidance applicable to Microsoft Defender for Cloud.
You can monitor this security baseline and its recommendations using Microsoft Defender for Cloud. Azure Policy definitions will be listed in the Regulatory Compliance section of the Microsoft Defender for Cloud portal page.
When a feature has relevant Azure Policy Definitions, they are listed in this baseline to help you measure compliance with the Microsoft cloud security benchmark controls and recommendations. Some recommendations may require a paid Microsoft Defender plan to enable certain security scenarios.
IM-1: Use centralized identity and authentication system
Features
Azure AD Authentication Required for Data Plane Access
Description: Service supports using Azure AD authentication for data plane access. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
True
Microsoft
Configuration Guidance: No additional configurations are required as this is enabled on a default deployment.
Local Authentication Methods for Data Plane Access
Description: Local authentications methods supported for data plane access, such as a local username and password. Learn more.
Supported
Enabled By Default
Configuration Responsibility
False
Not Applicable
Not Applicable
Configuration Guidance: This feature is not supported to secure this service.
IM-3: Manage application identities securely and automatically
Features
Managed Identities
Description: Data plane actions support authentication using managed identities. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Use Azure managed identities instead of service principals when possible, which can authenticate to Azure services and resources that support Azure Active Directory (Azure AD) authentication. Managed identity credentials are fully managed, rotated, and protected by the platform, avoiding hard-coded credentials in source code or configuration files.
Description: Data plane supports authentication using service principals. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: There is no current Microsoft guidance for this feature configuration. Please review and determine if your organization wants to configure this security feature.
IM-7: Restrict resource access based on conditions
Features
Conditional Access for Data Plane
Description: Data plane access can be controlled using Azure AD Conditional Access Policies. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Define the applicable conditions and criteria for Azure Active Directory (Azure AD) conditional access in the workload. Consider common use cases such as blocking or granting access from specific locations, blocking risky sign-in behavior, or requiring organization-managed devices for specific applications.
IM-8: Restrict the exposure of credential and secrets
Features
Service Credential and Secrets Support Integration and Storage in Azure Key Vault
Description: Data plane supports native use of Azure Key Vault for credential and secrets store. Learn more.
Supported
Enabled By Default
Configuration Responsibility
False
Not Applicable
Not Applicable
Configuration Guidance: This feature is not supported to secure this service.
PA-1: Separate and limit highly privileged/administrative users
Features
Local Admin Accounts
Description: Service has the concept of a local administrative account. Learn more.
Supported
Enabled By Default
Configuration Responsibility
False
Not Applicable
Not Applicable
Configuration Guidance: This feature is not supported to secure this service.
PA-7: Follow just enough administration (least privilege) principle
Features
Azure RBAC for Data Plane
Description: Azure Role-Based Access Control (Azure RBAC) can be used to managed access to service's data plane actions. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Defender for Cloud uses Azure role-based access control (Azure RBAC) to provide built-in roles. You can assign these roles to users, groups, and services in Azure to give users access to resources according to the access defined in the role. We recommend that you assign the least permissive role needed for users to complete their tasks. For example, assign the Reader role to users who only need to view information about the security health of a resource but not take action, such as applying recommendations or editing policies.
Description: Service supports data in-transit encryption for data plane. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
True
Microsoft
Configuration Guidance: No additional configurations are required as this is enabled on a default deployment.
DP-4: Enable data at rest encryption by default
Features
Data at Rest Encryption Using Platform Keys
Description: Data at-rest encryption using platform keys is supported, any customer content at rest is encrypted with these Microsoft managed keys. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
True
Microsoft
Configuration Guidance: No additional configurations are required as this is enabled on a default deployment.
DP-5: Use customer-managed key option in data at rest encryption when required
Features
Data at Rest Encryption Using CMK
Description: Data at-rest encryption using customer-managed keys is supported for customer content stored by the service. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Microsoft Defender for Cloud uses a configured Log Analytics workspace to store the data, alerts, and recommendations it generates. Configure a customer-managed key (CMK) for the workspace you use for Microsoft Defender for Cloud data collection. A CMK encrypts all data saved or sent to the workspace with an Azure Key Vault key that you create and own.
Description: The service supports Azure Key Vault integration for any customer keys, secrets, or certificates. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Microsoft Defender for Cloud uses a configured Log Analytics workspace to store the data, alerts, and recommendations it generates. Configure a customer-managed key (CMK) for the workspace you use for Microsoft Defender for Cloud data collection. A CMK encrypts all data saved or sent to the workspace with an Azure Key Vault key that you create and own.
Description: Service configurations can be monitored and enforced via Azure Policy. Learn more.
Supported
Enabled By Default
Configuration Responsibility
True
False
Customer
Configuration Guidance: Use Microsoft Defender for Cloud to configure Azure Policy to audit and enforce configurations of your Azure resources. Use Azure Monitor to create alerts when there is a configuration deviation detected on the resources. Use Azure Policy [deny] and [deploy if not exists] effects to enforce secure configuration across Azure resources.
Description: Service produces resource logs that can provide enhanced service-specific metrics and logging. The customer can configure these resource logs and send them to their own data sink like a storage account or log analytics workspace. Learn more.
Supported
Enabled By Default
Configuration Responsibility
False
Not Applicable
Not Applicable
Configuration Guidance: This feature is not supported to secure this service.
Explore network traffic filtering with Network Security Group, set up Microsoft Defender for Cloud, create a Log Analytics workspace, configure Log Analytics agent integration, Azure Key Vault networking, and connect an Azure SQL server using Azure Private Endpoint in the Azure portal. Enhance cloud security effectively. (SC-5002)
The Azure Policy security baseline provides procedural guidance and resources for implementing the security recommendations specified in the Microsoft cloud security benchmark.