Tailscale Premium Posture integration disabled or removed

Tailscale_Audit_CL
| where Action in ("DELETE", "UPDATE")
| where tostring(Target.type) == "POSTURE_INTEGRATION"
  or tostring(Target.type) startswith "POSTURE"
| extend ActorLogin = tostring(Actor.loginName)
| extend Provider = tostring(Target.name)
| project TimeGenerated, ActorLogin, Action, Provider, Target, Old, New, Origin

incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: P1D
    reopenClosedIncident: false
    enabled: true
    matchingMethod: AllEntities
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: ActorLogin
    identifier: FullName
query: |
  Tailscale_Audit_CL
  | where Action in ("DELETE", "UPDATE")
  | where tostring(Target.type) == "POSTURE_INTEGRATION"
    or tostring(Target.type) startswith "POSTURE"
  | extend ActorLogin = tostring(Actor.loginName)
  | extend Provider = tostring(Target.name)
  | project TimeGenerated, ActorLogin, Action, Provider, Target, Old, New, Origin
id: a1b2c3d4-5678-9012-34ab-cdef12345030
queryFrequency: 15m
description-detailed: |
  Identifies when a device-posture integration is disabled or removed from the tailnet. Posture integrations enforce device compliance; removing one disables that enforcement and increases blast radius for compromised endpoints. Requires Tailscale Premium or Enterprise.
status: Available
version: 1.0.0
severity: High
relevantTechniques:
- T1562
- T1556
name: 'Tailscale Premium: Posture integration disabled or removed'
kind: Scheduled
tactics:
- DefenseEvasion
- Persistence
requiredDataConnectors:
- dataTypes:
  - Tailscale_Audit_CL
  connectorId: TailscalePremiumCCF
description: Identifies when a device-posture integration is disabled or removed from the tailnet. Posture integrations enforce device compliance - removal weakens fleet posture and is a possible defense-evasion step.
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tailscale%20%28CCF%29/Analytic%20Rules/TailscalePremiumPostureIntegrationDisabled.yaml
triggerOperator: gt
triggerThreshold: 0
queryPeriod: 15m

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/a1b2c3d4-5678-9012-34ab-cdef12345030')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a1b2c3d4-5678-9012-34ab-cdef12345030')]",
      "properties": {
        "alertRuleTemplateName": "a1b2c3d4-5678-9012-34ab-cdef12345030",
        "customDetails": null,
        "description": "Identifies when a device-posture integration is disabled or removed from the tailnet. Posture integrations enforce device compliance - removal weakens fleet posture and is a possible defense-evasion step.",
        "description-detailed": "Identifies when a device-posture integration is disabled or removed from the tailnet. Posture integrations enforce device compliance; removing one disables that enforcement and increases blast radius for compromised endpoints. Requires Tailscale Premium or Enterprise.\n",
        "displayName": "Tailscale Premium: Posture integration disabled or removed",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorLogin",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P1D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tailscale%20%28CCF%29/Analytic%20Rules/TailscalePremiumPostureIntegrationDisabled.yaml",
        "query": "Tailscale_Audit_CL\n| where Action in (\"DELETE\", \"UPDATE\")\n| where tostring(Target.type) == \"POSTURE_INTEGRATION\"\n  or tostring(Target.type) startswith \"POSTURE\"\n| extend ActorLogin = tostring(Actor.loginName)\n| extend Provider = tostring(Target.name)\n| project TimeGenerated, ActorLogin, Action, Provider, Target, Old, New, Origin\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT15M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion",
          "Persistence"
        ],
        "techniques": [
          "T1556",
          "T1562"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}