Kubernetes & Container Security Architecture — The Container Defense Stack

A hands-on senior-level architecture course that designs container and Kubernetes security as a defense-in-depth stack across a large multi-cluster estate. Work the container defense stack - eight layers a defensible platform is built from: Image & Build, Registry & Supply Chain, Admission Control, Cluster Hardening, Runtime Security, Network Policy, Secrets & Identity, and Observability & Response - so a compromise cannot pass from one layer to the next, with real image signing, admission policy-as-code, RBAC, runtime detection, NetworkPolicy, workload identity, and cluster forensics. Four hands-on activities in every lesson.

What you'll learn

• Design the build and supply-chain layers: minimal non-root images, CI scanning, image signing, SBOMs, and admission of only signed images.
• Enforce admission policy-as-code and Pod Security Standards, and harden the control plane, nodes, and RBAC.
• Design runtime security and networking: tight runtime profiles, drift detection, default-deny NetworkPolicies, mesh mTLS, and egress control.
• Externalize secrets and workload identity, and build cluster observability with audit logging, SOC telemetry, and forensics-aware response.

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