- name: S3 Bucket Encryption set to SSE AES 256, PASS input: Resources: ExampleS3: Type: AWS::S3::Bucket Properties: BucketName: my-bucket BucketEncryption: ServerSideEncryptionConfiguration: - ServerSideEncryptionByDefault: SSEAlgorithm: AES256 expectations: rules: S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: FAIL