Cloudflare - Multiple error requests from single source

let threshold = 100;
Cloudflare
| where HttpRequestMethod =~ 'GET'
| summarize err_cnt = count() by SrcIpAddr, bin(TimeGenerated, 5m)
| where err_cnt > threshold
| extend IPCustomEntity = SrcIpAddr

severity: Low
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare/Analytic Rules/CloudflareMultipleErrorsSource.yaml
description: |
    'Detects multiple failure requests from single source in short timeframe.'
triggerOperator: gt
queryPeriod: 1h
requiredDataConnectors:
- dataTypes:
  - Cloudflare
  connectorId: CloudflareDataConnector
queryFrequency: 1h
triggerThreshold: 0
tactics:
- InitialAccess
query: |
  let threshold = 100;
  Cloudflare
  | where HttpRequestMethod =~ 'GET'
  | summarize err_cnt = count() by SrcIpAddr, bin(TimeGenerated, 5m)
  | where err_cnt > threshold
  | extend IPCustomEntity = SrcIpAddr  
status: Available
kind: Scheduled
relevantTechniques:
- T1190
- T1133
version: 1.0.0
id: ef877d68-755f-4cf1-ac1d-f336e395667c
entityMappings:
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
name: Cloudflare - Multiple error requests from single source

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/ef877d68-755f-4cf1-ac1d-f336e395667c')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ef877d68-755f-4cf1-ac1d-f336e395667c')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "Cloudflare - Multiple error requests from single source",
        "description": "'Detects multiple failure requests from single source in short timeframe.'\n",
        "severity": "Low",
        "enabled": true,
        "query": "let threshold = 100;\nCloudflare\n| where HttpRequestMethod =~ 'GET'\n| summarize err_cnt = count() by SrcIpAddr, bin(TimeGenerated, 5m)\n| where err_cnt > threshold\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1190",
          "T1133"
        ],
        "alertRuleTemplateName": "ef877d68-755f-4cf1-ac1d-f336e395667c",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "status": "Available",
        "templateVersion": "1.0.0",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare/Analytic Rules/CloudflareMultipleErrorsSource.yaml"
      }
    }
  ]
}