{
  "case_id": "hard",
  "difficulty": "hard",
  "campaign": {
    "name": "Global Auto Insurance Q4 Push",
    "duration_days": 14,
    "total_budget": 20000,
    "conversion_value": 10.0,
    "investigation_budget": 6,
    "industry_benchmarks": {
      "avg_ctr": 0.021,
      "avg_cvr": 0.028
    }
  },
  "publishers": {
    "pub_001": {
      "name": "AutoInsure Direct",
      "is_fraudulent": false,
      "fraud_type": null,
      "base_traffic_rate": 11000,
      "true_ctr": 0.023,
      "true_cvr": 0.033,
      "cpm_rate": 2.0,
      "budget_allocation": 0.25,
      "suspicion_reactivity": 1.0,
      "fraud_schedule": {},
      "fake_ctr": 0.0,
      "fake_cvr": 0.0,
      "day_factors": [1.0, 1.01, 0.99, 1.02, 1.0, 0.97, 0.94, 1.02, 1.01, 0.99, 1.01, 1.02, 0.98, 1.0],
      "noise_factors": [1.0, 0.99, 1.01, 1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.0, 1.01]
    },
    "pub_002": {
      "name": "SafeDrive Media",
      "is_fraudulent": false,
      "fraud_type": null,
      "base_traffic_rate": 8000,
      "true_ctr": 0.020,
      "true_cvr": 0.029,
      "cpm_rate": 2.0,
      "budget_allocation": 0.25,
      "suspicion_reactivity": 1.0,
      "fraud_schedule": {},
      "fake_ctr": 0.0,
      "fake_cvr": 0.0,
      "day_factors": [1.0, 0.99, 1.01, 1.0, 1.02, 0.97, 0.94, 1.01, 1.0, 0.99, 1.01, 1.0, 0.98, 1.01],
      "noise_factors": [1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.0, 1.01]
    },
    "pub_003": {
      "name": "ShadowNet Ads",
      "is_fraudulent": true,
      "fraud_type": "domain_spoofing",
      "base_traffic_rate": 12000,
      "true_ctr": 0.019,
      "true_cvr": 0.025,
      "cpm_rate": 2.5,
      "budget_allocation": 0.25,
      "suspicion_reactivity": 1.8,
      "fraud_schedule": {
        "start_day": 4,
        "ramp_days": 3,
        "peak_intensity": 1.8
      },
      "fake_ctr": 0.025,
      "fake_cvr": 0.003,
      "day_factors": [1.0, 1.02, 1.04, 1.08, 1.10, 1.08, 1.10, 1.12, 1.10, 1.08, 1.10, 1.12, 1.10, 1.08],
      "noise_factors": [1.0, 1.01, 0.99, 1.02, 1.0, 0.98, 1.01, 1.0, 0.99, 1.01, 1.0, 0.99, 1.01, 1.0]
    },
    "pub_004": {
      "name": "ConvertMax Pro",
      "is_fraudulent": true,
      "fraud_type": "bot_traffic",
      "base_traffic_rate": 9000,
      "true_ctr": 0.021,
      "true_cvr": 0.029,
      "cpm_rate": 2.0,
      "budget_allocation": 0.25,
      "suspicion_reactivity": 1.5,
      "fraud_schedule": {
        "start_day": 5,
        "ramp_days": 3,
        "peak_intensity": 1.5
      },
      "fake_ctr": 0.04,
      "fake_cvr": 0.002,
      "day_factors": [1.0, 1.0, 1.0, 1.01, 1.03, 1.05, 1.06, 1.07, 1.06, 1.07, 1.06, 1.07, 1.06, 1.05],
      "noise_factors": [1.0, 1.01, 0.99, 1.0, 1.01, 0.99, 1.02, 1.0, 0.98, 1.01, 1.0, 0.99, 1.01, 1.0]
    }
  },
  "ground_truth": {
    "fraudulent_publishers": ["pub_003", "pub_004"],
    "fraud_types": {
      "pub_003": "domain_spoofing",
      "pub_004": "bot_traffic"
    }
  }
}