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EFS Encryption has not been enabled

Default Severity: high

Explanation

If your organization is subject to corporate or regulatory policies that require encryption of data and metadata at rest, we recommend creating a file system that is encrypted at rest, and mounting your file system using encryption of data in transit.

Possible Impact

Data can be read from the EFS if compromised

Suggested Resolution

Enable encryption for EFS

Insecure Example

The following example will fail the aws-efs-enable-at-rest-encryption check. 

 resource "aws_efs_file_system" "bad_example" {
   name       = "bar"
   encrypted  = false
   kms_key_id = ""
 }

Secure Example

The following example will pass the aws-efs-enable-at-rest-encryption check. 

 resource "aws_efs_file_system" "good_example" {
   name       = "bar"
   encrypted  = true
   kms_key_id = "my_kms_key"
 }