Kubernetes Security Policies Implement defense-in-depth security for Kubernetes clusters. Pod Security Standards Restricted (Most Secure) Secure Pod Configuration Network Policies Default Deny All Allow Frontend to Backend Allow DNS Egress RBAC Configuration Role (Namespace-scoped) RoleBinding OPA Gatekeeper Policies Required Labels Constraint Service Mesh Security (Istio) Strict mTLS Best Practices 1. Pod Security Standards at namespace level 2. Network Policies for segmentation 3. Least-privilege RBAC for all service accounts 4. Run containers as non-root 5. Read-only root filesystem 6. Dro…