Azure DevOps PAT used with Browser

AzureDevOpsAuditing
| where AuthenticationMechanism startswith "PAT"
// Look for useragents that include a redenring engine
| where UserAgent has_any ("Gecko", "WebKit", "Presto", "Trident", "EdgeHTML", "Blink")
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])

description: |
  'Personal Access Tokens (PATs) are used as an alternate password to authenticate into Azure DevOps. PATs are intended for programmatic access use in code or applications. 
  This can be prone to attacker theft if not adequately secured. This query looks for the use of a PAT in authentication but from a User Agent indicating a browser. 
  This should not be normal activity and could be an indicator of an attacker using a stolen PAT.'  
status: Available
queryPeriod: 1d
severity: Medium
triggerOperator: gt
kind: Scheduled
triggerThreshold: 0
version: 1.0.4
name: Azure DevOps PAT used with Browser
queryFrequency: 1d
id: 5f0d80db-3415-4265-9d52-8466b7372e3a
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AzureDevOpsAuditing/Analytic Rules/ADOPATUsedWithBrowser.yaml
entityMappings:
- fieldMappings:
  - columnName: ActorUPN
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountUPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: IpAddress
    identifier: Address
  entityType: IP
tactics:
- CredentialAccess
requiredDataConnectors: []
query: |
  AzureDevOpsAuditing
  | where AuthenticationMechanism startswith "PAT"
  // Look for useragents that include a redenring engine
  | where UserAgent has_any ("Gecko", "WebKit", "Presto", "Trident", "EdgeHTML", "Blink")
  | extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])  

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/5f0d80db-3415-4265-9d52-8466b7372e3a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/5f0d80db-3415-4265-9d52-8466b7372e3a')]",
      "properties": {
        "alertRuleTemplateName": "5f0d80db-3415-4265-9d52-8466b7372e3a",
        "customDetails": null,
        "description": "'Personal Access Tokens (PATs) are used as an alternate password to authenticate into Azure DevOps. PATs are intended for programmatic access use in code or applications. \nThis can be prone to attacker theft if not adequately secured. This query looks for the use of a PAT in authentication but from a User Agent indicating a browser. \nThis should not be normal activity and could be an indicator of an attacker using a stolen PAT.'\n",
        "displayName": "Azure DevOps PAT used with Browser",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorUPN",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IpAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AzureDevOpsAuditing/Analytic Rules/ADOPATUsedWithBrowser.yaml",
        "query": "AzureDevOpsAuditing\n| where AuthenticationMechanism startswith \"PAT\"\n// Look for useragents that include a redenring engine\n| where UserAgent has_any (\"Gecko\", \"WebKit\", \"Presto\", \"Trident\", \"EdgeHTML\", \"Blink\")\n| extend AccountName = tostring(split(ActorUPN, \"@\")[0]), AccountUPNSuffix = tostring(split(ActorUPN, \"@\")[1])\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "templateVersion": "1.0.4",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}