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Description

Create an activity log alert for the Delete Network Security Group event.

Rationale​

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

Audit​

This policy flags an Azure Subscription as INCOMPLIANT if it does not have an enabled related Azure Activity Log Alert scoped to the subscription whose Condition JSON filters on the Administrative category and the Microsoft.Network/networkSecurityGroups/delete operation.

Default Value​

By default, no monitoring alerts are created.

References​

  1. https://azure.microsoft.com/en-us/updates?id=classic-alerting-monitoring-retirement
  2. https://learn.microsoft.com/en-us/azure/azure-monitor/alerts/alerts-create-activity-log-alert-rule
  3. https://learn.microsoft.com/en-us/rest/api/monitor/activity-log-alerts/create-or-update
  4. https://learn.microsoft.com/en-us/rest/api/monitor/activity-log-alerts/list-by-subscription-id
  5. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-logging-threat-detection#lt-3-enable-logging-for-security-investigation