Module 22 · Kubernetes Security at Production Scale

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 14, 2026
3 min read
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Why this module exists. Kubernetes at production scale has its own security challenges beyond the basic cluster setup: multi-tenancy, supply-chain attacks, secrets management, network policy at scale, GitOps security. This module covers the production-grade patterns.

The four production K8s domains

  1. Cluster security: API server, etcd, kubelet, control plane hardening.
  2. Workload security: Pod Security Standards, admission control, runtime protection.
  3. Network security: NetworkPolicy, service mesh, ingress, egress.
  4. Supply chain: image signing, SBOM, admission control verification.
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