Explanation
You should not use outdated/insecure TLS versions for encryption. You should be using TLS v1.2+.
Insecure Example
The following example will fail the AWS025 check.
resource "aws_api_gateway_domain_name" "bad_example" {
security_policy = "TLS_1_0"
}Secure Example
The following example will pass the AWS025 check.
resource "aws_api_gateway_domain_name" "good_example" {
security_policy = "TLS_1_2"
}