CNCF · Professional Certification · Professional
Certified Kubernetes Security Specialist (CKS)
Crydd Score 58
Demand Growing
Career Value High
Recognition High
CKS at a glance
- Provider
- CNCF
- Credential type
- Professional Certification
- Exam required
- Yes
- Category
- Security
- Level
- Professional
- Cost
- About $445
- Difficulty
- Advanced
- Time to earn
- 3–6 months
- Validity
- 2 years
- Format
- Hands-on performance-based exam, 120 minutes
- Prerequisites
- A current CKA certification is required
What is CKS?
The security specialisation on top of CKA — and, like all CNCF exams, entirely hands-on. You are given real clusters and asked to harden them under time pressure.
Skills it covers
- Cluster hardening
- Supply-chain security
- Runtime security
- Network policies
- Secrets management
Is CKS worth it? The Crydd Verdict
CS 58Choose it if
You already hold CKA and your job is to keep production Kubernetes safe.
Consider alternatives if
You do not yet hold CKA — it is a hard prerequisite, not a suggestion.
Why we say so
A practical exam, a mandatory prerequisite, and a scarce skill combine to make this one of the highest-signal credentials in cloud-native security.
Market demand
Kubernetes is now default infrastructure in a large share of engineering organisations, and securing it is a specialism far fewer engineers have than can operate it.
Where CKS takes you
- Cloud Security Engineer
- DevOps Engineer
- Site Reliability Engineer
Career roadmaps show where this certification fits in each path. See the roadmaps.
Related certifications
Curated connections from the catalog — each labelled with how it relates to CKS, so you know why it’s here.
