{"id":"vpc-security-enforced-at-two-independent-layers","text":"VPC network security operates at both subnet level (NACLs, one-to-many mapping) and instance level (security groups), and FIS chaos testing validates both layers by swapping NACLs/route tables.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"vpc-security-enforced-at-two-independent-layers","truth_value":"IN","reason":"premise"}]}}