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Monitor activity log alert does not exist for "Create or Update Network Security Group" events Affecting Monitor service in Azure

Severity

0.0
medium
0
10
    Severity Framework
    Snyk CCSS
    Rule category
    Monitoring / Network

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    Frameworks
    CIS-Azure HIPAA ISO-27001 NIST-800-53 PCI-DSS SOC-2
  • Snyk ID SNYK-CC-00679
  • credit Snyk Research Team
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Description

Monitoring for "Create or Update Network Security Group" events gives insight into network access changes and may reduce the time it takes to detect suspicious activity.

How to fix?

Set field operationName to Microsoft.Authorization/policyAssignments/Delete and set enabled to true.

Example Configuration

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "resources": [
        {
            "type": "Microsoft.Insights/activityLogAlerts",
            "apiVersion": "2017-04-01",
            "name": "default",
            "location": "global",
            "properties": {
                "scopes": [
                    "[subscription().id]"
                ],
                "condition": {
                    "allOf": [
                        {
                            "field": "category",
                            "equals": "Administrative"
                        },
                        {
                            "field": "operationName",
                            "equals": "Microsoft.Authorization/policyAssignments/Delete"
                        }
                    ]
                },
                "actions": {
                    "actionGroups": []
                }
            }
        }
    ]
}

References