UniFi Site Manager Long-tail ISP latency hotspots P95

Unifi_SiteManager_ISPMetrics_CL
| where TimeGenerated > ago(7d)
| mv-expand period = Periods
| extend AvgMs = todouble(period.data.wan.avgLatency),
         MaxMs = todouble(period.data.wan.maxLatency)
| summarize ['Median ms'] = percentile(AvgMs, 50),
            ['P95 ms']    = percentile(AvgMs, 95),
            ['P99 ms']    = percentile(MaxMs, 99),
            Samples=count() by SiteId = tostring(SiteId)
| extend ['P95/median ratio'] = round(['P95 ms'] / ['Median ms'], 2)
| where ['P95/median ratio'] > 5
| order by ['P95/median ratio'] desc

id: 3f49ba8c-8995-9d38-579d-24afa09f5a2a
requiredDataConnectors:
- connectorId: UniFiSiteManagerConnectorDefinition
  dataTypes:
  - Unifi_SiteManager_ISPMetrics_CL
description: |
  Sites where the P95 ISP latency is significantly above the median over the last 7 days. Helps identify sites suffering occasional but severe latency spikes that average-based monitoring misses.
name: 'UniFi Site Manager: Long-tail ISP latency hotspots (P95)'
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudLongTailLatencyHotspots.yaml
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: siteId
  entityType: CloudApplication
tactics:
- Impact
kind: HuntingQuery
relevantTechniques:
- T1498
query: |
  Unifi_SiteManager_ISPMetrics_CL
  | where TimeGenerated > ago(7d)
  | mv-expand period = Periods
  | extend AvgMs = todouble(period.data.wan.avgLatency),
           MaxMs = todouble(period.data.wan.maxLatency)
  | summarize ['Median ms'] = percentile(AvgMs, 50),
              ['P95 ms']    = percentile(AvgMs, 95),
              ['P99 ms']    = percentile(MaxMs, 99),
              Samples=count() by SiteId = tostring(SiteId)
  | extend ['P95/median ratio'] = round(['P95 ms'] / ['Median ms'], 2)
  | where ['P95/median ratio'] > 5
  | order by ['P95/median ratio'] desc

{
  "$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/3f49ba8c-8995-9d38-579d-24afa09f5a2a')]",
      "kind": "Huntingquery",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3f49ba8c-8995-9d38-579d-24afa09f5a2a')]",
      "properties": {
        "alertRuleTemplateName": "3f49ba8c-8995-9d38-579d-24afa09f5a2a",
        "customDetails": null,
        "description": "Sites where the P95 ISP latency is significantly above the median over the last 7 days. Helps identify sites suffering occasional but severe latency spikes that average-based monitoring misses.\n",
        "displayName": "UniFi Site Manager: Long-tail ISP latency hotspots (P95)",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "siteId",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/UniFi%20Site%20Manager%20%28CCF%29/Hunting%20Queries/UniFiCloudLongTailLatencyHotspots.yaml",
        "query": "Unifi_SiteManager_ISPMetrics_CL\n| where TimeGenerated > ago(7d)\n| mv-expand period = Periods\n| extend AvgMs = todouble(period.data.wan.avgLatency),\n         MaxMs = todouble(period.data.wan.maxLatency)\n| summarize ['Median ms'] = percentile(AvgMs, 50),\n            ['P95 ms']    = percentile(AvgMs, 95),\n            ['P99 ms']    = percentile(MaxMs, 99),\n            Samples=count() by SiteId = tostring(SiteId)\n| extend ['P95/median ratio'] = round(['P95 ms'] / ['Median ms'], 2)\n| where ['P95/median ratio'] > 5\n| order by ['P95/median ratio'] desc\n",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1498"
        ],
        "templateVersion": "1.0.0"
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}