{
  "model_version": "2026-05-27",
  "optimal_weight": 0.1,
  "feature_list": {
    "model_a": [
      "is_accessibility_enabled",
      "is_remote_app_running",
      "hesitation_time_sec",
      "tx_count_per_step",
      "dest_tx_count_24step",
      "amount_vs_avg_ratio",
      "is_odd_hours",
      "is_first_time_recipient"
    ],
    "model_b": [
      "dest_is_new_account",
      "is_accessibility_enabled",
      "is_remote_app_running",
      "is_first_time_recipient",
      "is_odd_hours",
      "dest_cashout_ratio",
      "dest_avg_step_to_cashout",
      "dest_tx_count_received",
      "hesitation_time_sec",
      "amount_vs_avg_ratio",
      "tx_count_per_step",
      "dest_tx_count_24step"
    ]
  },
  "threshold_layer3": {
    "block": 0.8,
    "alert_otp": 0.5,
    "pass": 0.0
  },
  "hard_rules": {
    "rule1_bot": "is_accessibility_enabled=1 AND is_remote_app_running=1 → Block",
    "rule2_victim": "hesitation_time_sec>45 AND is_first_time_recipient=1 → bias score >= 0.6"
  }
}