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# Virtual machine scale sets do not have encryption at host enabled misconfiguration detected in code

## Rule Details

|                        |                                       |
| ---------------------- | ------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AZURE\_97                     |
| Category - Subcategory | Storage - Encryption                  |
| Provider               | AZURE                                 |
| Severity               | LOW                                   |
| Framework              | ARM, Bicep, Terraform, Terraform Plan |

## Impact

Use encryption at host to get end-to-end encryption for your virtual machine and virtual machine scale set data. Encryption at host enables encryption at rest for your temporary disk and OS/data disk caches. Temporary and ephemeral OS disks are encrypted with platform-managed keys when encryption at host is enabled. OS/data disk caches are encrypted at rest with either customer-managed or platform-managed key, depending on the encryption type selected on the disk.

## How to Fix

*Resource:* azurerm\_windows\_virtual\_machine\_scale\_set

* *Arguments:* encryption\_at\_host\_enabled \[source,go]

***

resource "azurerm\_windows\_virtual\_machine\_scale\_set" "example" { ...

* encryption\_at\_host\_enabled = true ... }

***


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