Policy: Azure > CIS v3.0 > 08 - Virtual Machines > 08.09 - [Legacy] Ensure that VHDs are Encrypted > Attestation

By setting this policy, you attest that you have manually verified that it complies with the relevant section of the CIS Benchmark.

From Azure Portal 1. Navigate to the storage account that you wish to encrypt 2. Select encryption 3. Select the encryption type that you wish to use

If you wish to use a Microsoft-managed key (the default), you can save at this point and encryption will be applied to the account. If you select Customer-managed keys, it will ask for the location of the key (The default is an Azure Key Vault) and the key name. Once these are captured, save the configuration and the account will be encrypted using the provided key.

From Azure CLI: Create the Key Vault az keyvault create --name <name> --resource-group <resourceGroup> --location <location> --enabled-for-disk-encryption

Encrypt the disk and store the key in Key Vault az vm encryption enable -g <resourceGroup> --name <name> --disk-encryption-keyvault myKV

From PowerShell This process uses a Key Vault to store the keys Create the Key Vault New-AzKeyvault -name <name> -ResourceGroupName <resourceGroup> -Location <location> -EnabledForDiskEncryption

Encrypt the disk and store the key in Key Vault $KeyVault = Get-AzKeyVault -VaultName <name> -ResourceGroupName <resourceGroup> Set-AzVMDiskEncryptionExtension -ResourceGroupName <resourceGroup> -VMName <name> -DiskEncryptionKeyVaultUrl $KeyVault.VaultUri -DiskEncryptionKeyVaultId $KeyVault.ResourceId

Once verified, enter the date that this attestation expires. Note that the date can not be further in the future than is specified in report level Maximum Attestation Duration policy. Set to a blank value to clear the attestation.