Certified Kubernetes Security Specialist (CKS) is currently an online, proctored, performance-based certification exam priced at $445 exam-only.
Choose CKS when you already have Kubernetes administration grounding and want to validate cluster hardening, system hardening, workload vulnerabilities, supply-chain security and runtime security skills.
Who Is CKS For?
CKS is the Kubernetes security-specialist certification. CNCF says candidates must have taken and passed CKA before attempting CKS; the CKA does not have to be active.
The current domains cover cluster setup/hardening, system hardening, minimizing microservice vulnerabilities, supply-chain security, and monitoring/logging/runtime security.
What Are the Current CKS Purchase Options?
CKS currently costs $445 exam-only, $645 with Kubernetes Security Essentials (LFS260), or $625 in the certification + THRIVE-ONE route. Choose by the preparation you will actually use, not by bundle size.
| Option | Current price | Best fit |
|---|---|---|
| CKS exam only | $445 | You already have the skills and mainly need the credential exam. |
| CKS + THRIVE-ONE Annual | $625 | You want broader annual learning access alongside the certification. |
| Kubernetes Security Essentials (LFS260) + CKS | $645 | You want one focused certification-aligned course plus the exam. |
Prices checked 7 Sep 2026. Verify the official page before purchase.
Should You Choose CKS Training or Exam-Only?
The official course option is Kubernetes Security Essentials (LFS260). It is useful when you want one structured provider-aligned route. If you already perform the tested work confidently, exam-only can be more efficient. If you plan broader learning across the year, compare the THRIVE-ONE bundle.
How Should You Prepare Efficiently for CKS?
Prepare efficiently for CKS by building Kubernetes security skill on top of a demonstrated CKA administration base. Practice current security domains hands-on and repair any underlying cluster-administration weakness before adding more security material.
- Use the current official curriculum/domains as your study boundary.
- Practise the actual kind of work the exam tests; for performance-based exams, do tasks in a live environment rather than only watching demonstrations.
- Build timed practice into the final stage of preparation.
- Use legitimate simulators and course labs; avoid leaked or reconstructed exam questions.
- Re-check current exam rules and environment information before scheduling.
Which Lower-Level Certifications Can CKS Renew Through CARE?
Current CARE rules allow a qualifying CKS achievement or recertification to renew or reinstate a previously earned KCSA from 1 January 2026 and a previously earned CKA from 18 June 2026. Linux Foundation also describes a cascade through CKA that can keep an eligible previously earned KCNA current.
What Should You Verify Before Buying CKS?
Before buying CKS, verify that you have previously passed CKA, then confirm the current price, Kubernetes exam version, eligibility, attempt rules and whether LFS260 or THRIVE-ONE fits your preparation needs.
- Current price and any time-limited promotion.
- Current exam domains and software/environment information.
- Candidate-handbook and remote-proctoring requirements.
- Any prerequisite or certification-maintenance policy that affects your path.
- Whether you need a focused course, broad subscription or exam-only purchase.
Frequently asked questions
How much does CKS cost?
The current CKS exam-only list price is $445.
Do I need CKA before CKS?
Yes. CNCF states that you must previously pass CKA. It does not have to be active when you attempt CKS.
Can CKS extend my CKA?
Yes, under the current CARE policy. From June 18, 2026, passing or recertifying CKS can reinstate or extend a previously earned CKA.
How long is CKS valid?
CNCF currently states that CKS certification remains valid for two years.
Can CKS renew KCSA?
Yes. Under current CARE rules, achieving or recertifying CKS on or after 1 January 2026 can renew or reinstate a previously earned KCSA.
Can CKS renew CKA?
Yes. Under current CARE rules, achieving or recertifying CKS on or after 18 June 2026 can renew or reinstate a previously earned CKA.
Sources checked
Current CKS price, format, duration, validity, eligibility, attempts and training purchase routes on this page were rechecked against the first-party sources below on 7 Sep 2026. Recheck the official product or policy page before purchase or exam day because changeable terms can move.
- CKS certification - Linux Foundation
- CARE Program - Linux Foundation
Last fact check: 7 Sep 2026