{
  "lesson_id": "SEC-014",
  "lab_id": "SEC014-LAB1",
  "artifact": "Signed Update Trust & Freshness Record v1",
  "must_preserve_negative_evidence": true,
  "required_negative_classes": [
    "ROLLBACK_SNAPSHOT",
    "TIMESTAMP_EXPIRED",
    "DELEGATION_SCOPE"
  ],
  "changed_context_transfer_required": true,
  "owner_acceptance_must_be_blank": true,
  "real_private_keys_forbidden": true,
  "real_signing_forbidden": true,
  "external_repository_forbidden": true,
  "network_forbidden": true,
  "production_proof_forbidden": true
}