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Azure Kubernetes Network Policy Change

Sigma Rules

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Summary
The Azure Kubernetes Network Policy Change rule is designed to detect modifications or deletions to network policies in Azure Kubernetes Service (AKS). Network policies are crucial for governing the communication between pods in a Kubernetes cluster, and unauthorized changes can have significant security implications. This rule monitors the Azure Activity Logs for specific operations related to network policies, such as the WRITE and DELETE actions for both the NETWORKPOLICIES in the KUBERNETES and EXTENSIONS namespaces. By establishing alerts for these operations, the rule ensures that any unintended or malicious changes are flagged for further investigation. Potential false positives can arise from legitimate administrative actions, so it's essential for security teams to contextualize alerts by evaluating user identities and operational patterns.
Categories
  • Cloud
  • Kubernetes
  • Infrastructure
Data Sources
  • Cloud Service
  • Logon Session
Created: 2021-08-07