{
  "model_id": "SOC.088",
  "name": "Unexpected System Reboot",
  "description": "Host uptime counter reset — reboot detected. May be legitimate maintenance or attacker-triggered.",
  "threshold": 0.6,
  "evaluations": [
    {
      "name": "Reboot",
      "type": "comparison",
      "left": "event.type",
      "operator": "==",
      "right": "host.reboot",
      "weight": 4
    }
  ],
  "actions": [
    {
      "type": "emit_alert",
      "reason": "Unexpected reboot on {event.host.hostname} — verify with ops."
    }
  ],
  "mitre_tactics": [
    "Impact"
  ],
  "mitre_techniques": [
    "T1529"
  ],
  "severity": "medium",
  "observables": [
    "event.host.hostname"
  ]
}