Kubernetes Tutorial #10: Kubernetes Security Best Practices

A Kubernetes cluster has many attack surfaces. Misconfigured Pods can break out of their namespace. Overprivileged service accounts can access the entire cluster. Unscanned images can run with known vulnerabilities. This tutorial covers the essential security practices before taking any Kubernetes application to production. The 4Cs of Cloud Native Security Think of Kubernetes security in layers: Cloud → Cluster → Container → Code Code — vulnerabilities in your application code Container — image security, running as non-root, minimal base images Cluster — RBAC, Pod Security Standards, Network Policies Cloud — network firewall rules, IAM policies, cloud provider security Each layer depends on the one below it. Fixing only one layer is not enough. This tutorial focuses on the Container and Cluster layers. ...

July 19, 2026 · 7 min