rules:
- id: gcp-compute-boot-disk-encryption
  patterns:
  - pattern: |
      resource "google_compute_instance" $ANYTHING {
        ...
      }
  - pattern-not-inside: |
      resource "google_compute_instance" $ANYTHING {
        ...
        boot_disk {
          disk_encryption_key_raw = ...
        }
        ...
      }
  - pattern-not-inside: |
      resource "google_compute_instance" $ANYTHING {
        ...
        boot_disk {
          kms_key_self_link = ...
        }
        ...
      }
  message: Ensure VM disks for critical VMs are encrypted with Customer Supplied Encryption Keys (CSEK)
  languages: [hcl]
  severity: WARNING
  metadata:
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A04:2021 - Insecure Design
    cwe:
    - 'CWE-311: Missing Encryption of Sensitive Data'
    technology:
    - terraform
    - gcp
    category: security
    references:
    - https://docs.bridgecrew.io/docs/google-cloud-policy-index
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW