2026 Exam Guide
Certified Kubernetes Security Specialist Study Guide
Current exam coverage, candidate guidance, important topics, and practical preparation advice for the CKS exam.
What Is Certified Kubernetes Security Specialist?
Certified Kubernetes Security Specialist is an advanced CNCF and Linux Foundation certification focused on securing Kubernetes clusters and workloads. It is performance-based and expects candidates to solve security tasks in a live environment. CKS covers cluster hardening, workload security, supply chain security, monitoring, logging, network policy, secrets, and incident response.
In 2026, Kubernetes security remains critical for platform and DevSecOps teams. Candidates should understand RBAC, admission control, Pod Security Standards, NetworkPolicy, audit logs, image scanning, signed images, runtime detection, service mesh security, secrets protection, node hardening, and containment of compromised workloads.
Who Should Take This Exam?
CKS is for Kubernetes administrators, security engineers, platform security engineers, SREs, and DevSecOps practitioners. The CKA is commonly treated as a prerequisite path because CKS assumes strong cluster administration ability.
Candidates should practice hardening and breaking clusters in a lab. The exam is not only about knowing security terms; it is about applying controls quickly.
Exam Domains
Cluster Setup and Hardening
Guide areaAPI security, RBAC, node protection, component configuration, and admission controls.
Workload and Supply Chain Security
Guide areaPod security, image trust, scanning, secrets, and least-privilege workloads.
Monitoring, Logging, and Runtime
Guide areaAudit logs, runtime detection, behavioral monitoring, and incident evidence.
Network and Incident Response
Guide areaNetwork policies, service communication, containment, recovery, and credential rotation.
Common Topics Covered
- RBAC
- Pod Security Standards
- NetworkPolicy
- Audit logs
- Image scanning
- Binary Authorization concepts
- Secrets
- Runtime detection
- mTLS
- Incident response
Study Tips
Review Kubernetes security from the API server down to the container. Practice RBAC, admission, network policies, pod security, secret protection, and audit policy.
Do hands-on incident drills. Isolate a workload, inspect logs, rotate credentials, remove unsafe privileges, and redeploy from trusted images.
Practice Questions Overview
Certoga's CKS questions help reinforce security concepts and control selection. They should be paired with hands-on Kubernetes security labs because the official exam is performance-based.