Query: rds_db_snapshot_encrypted_at_rest

(
select
  arn as resource,
  case
    when storage_encrypted then 'ok'
    else 'alarm'
  end as status,
  case
    when storage_encrypted then title || ' encrypted at rest.'
    else title || ' not encrypted at rest.'
  end as reason
  
  , region, account_id
from
  aws_rds_db_cluster_snapshot
)
union
(
select
  arn as resource,
  case
    when encrypted then 'ok'
    else 'alarm'
  end as status,
  case
    when encrypted then title || ' encrypted at rest.'
    else title || ' not encrypted at rest.'
  end as reason
  
  , region, account_id
from
  aws_rds_db_snapshot
);