CKS — Certified Kubernetes Security Specialist
The de facto industry standard for Kubernetes security — the only widely recognized vendor-neutral hands-on Kubernetes security credential outside of PDSO's CCNSE. 2-hour performance-based CLI exam in real Kubernetes clusters (currently v1.34), proctored by PSI. Covers cluster setup and hardening, system hardening, microservice vulnerability minimization, supply chain security, and monitoring/runtime security. Requires an active or expired CKA before scheduling — significant barrier vs PDSO CCNSE. $445, 2-year validity (earned before April 2024: 3 years). Part of the CNCF Kubestronaut program (requires CKA + CKAD + CKS + KCNA + KCSA). Strong employer recognition in cloud-native and DevSecOps roles.
| Issuer | Cloud Native Computing Foundation (CNCF) / Linux Foundation |
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| Level | expert |
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| Domains | Cloud Security |
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| Practical weight | 100% |
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| Cost (USD) | 445 |
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| Renewal | 2 years |
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| Skills | kubernetes_security, cluster_setup_hardening, system_hardening, microservice_vulnerability_minimization, supply_chain_security, monitoring_logging_runtime_security, network_policies, rbac, pod_security, image_scanning, audit_logging |
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Official certification page
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