turbot/azure_compliance

Control: 3.9 Ensure storage for critical data are encrypted with Customer Managed Key

Description

Enable sensitive data encryption at rest using Customer Managed Keys rather than Microsoft Managed keys.

By default, data in the storage account is encrypted using Microsoft Managed Keys at rest. All Azure Storage resources are encrypted, including blobs, disks, files, queues, and tables. All object metadata is also encrypted. However, if you want to control and manage this encryption key yourself, you can specify a customer-managed key, that key is used to protect and control access to the key that encrypts your data. You can also choose to automatically update the key version used for Azure Storage encryption whenever a new version is available in the associated Key Vault.

Remediation

From Console

  1. Login to Azure Storage Accounts
  2. For each storage account, go to Encryption under Security + networking
  3. Set Customer Managed Keys
  4. Select the Encryption key and enter the appropriate setting value as documented here
  5. Click Save

Note: By default, Encryption type is set to Microsoft Managed Keys.

Usage

steampipe check azure_compliance.control.cis_v130_3_9

SQL

This control uses a named query:

storage_account_encryption_at_rest_using_cmk

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