Description

Turning on Microsoft Defender for Storage enables threat detection for Storage, providing threat intelligence, anomaly detection, and behavior analytics in the Microsoft Defender for Cloud.

Rationale

Enabling Microsoft Defender for Storage allows for greater defense-in-depth, with threat detection provided by the Microsoft Security Response Center (MSRC).

Impact

Turning on Microsoft Defender for Storage incurs an additional cost per resource.

Audit

From Azure Portal

1. Go to Microsoft Defender for Cloud.
2. Under Management, select Environment Settings.
3. Click on the subscription name.
4. Select the Defender plans blade.
5. Ensure Status is set to On for Storage.

From Azure CLI

Ensure the output of the below command is Standard:

az security pricing show -n StorageAccounts

From PowerShell

Get-AzSecurityPricing -Name 'StorageAccounts' | Select-Object Name,PricingTier

Ensure output for Name PricingTier is StorageAccounts Standard.

From Azure Policy

If referencing a digital copy of this Benchmark, clicking a Policy ID will open a link to the associated Policy definition in Azure.

• Policy ID: 308fbb08-4ab8-4e67-9b29-592e93fb94fa - Name: Microsoft Defender for Storage (Classic) should be enabled

Default Value

By default, Microsoft Defender plan is off.

References

1. https://docs.microsoft.com/en-us/azure/security-center/security-center-detection-capabilities
2. https://docs.microsoft.com/en-us/rest/api/securitycenter/pricings/list
3. https://docs.microsoft.com/en-us/rest/api/securitycenter/pricings/update
4. https://docs.microsoft.com/en-us/powershell/module/az.security/get-azsecuritypricing
5. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-logging-threat-detection#lt-1-enable-threat-detection-capabilities