Sec-Subdomain-Takeover-Scan

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys verdict, risk, mitigation. DNS contains CNAME records pointing to deprovisioned third-party hosting services.

{
  "metrics": {
    "correct": {
      "checks": [
        {
          "contains": [
            "subdomain takeover"
          ]
        },
        {
          "contains": [
            "CNAME"
          ]
        },
        {
          "contains": [
            "deprovisioned"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "remove DNS"
          ]
        },
        {
          "contains": [
            "claim resource"
          ]
        },
        {
          "contains": [
            "monitoring"
          ]
        }
      ]
    }
  }
}