A blue team training platform for

CyberDefenders is a blue team training platform focused on the defensive side of cybersecurity to learn, validate, and advance CyberDefense skills.

Become a CyberDefender

Defenders everywhere use CyberDefenders


Latest blue team training, challenges and CTF

This section features announcements about upcoming challenges, new courses, and CTFs, so you can be sure you won't miss out on anything!

Newest Course

Certified CyberDefender (CCD)… - CCD is a vendor-neutral, hands-on cyber defense training and certification. This course will jumpst…

Newest Challenge

RedLine - Scenario: As a member of the Security Blue team, your assignment is to analyze a memory dump usi…

Upcoming CTF

Nothing is scheduled at the moment.
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Defend Smarter, Not Harder

Enhance your cyberdefense skills with our blue team challenges and real-world scenarios.

Less hype

We do not use jargons like 'cutting-edge', 'game-changing', and 'revolutionary'. We respect our users and trust their judgment.

More value

If we were to describe what we are trying to do in simple words, it would be 'solving defenders problems' one problem at a time, providing straightforward yet reliable solutions.

Community powered

The best projects are community-driven ones. Our users are our partners. They drive, shape, and lead vision execution.

Our users are our biggest fans.

We don't like to brag, but we don't mind letting our users do it for us. Here are a few nice things folks have said about our blue team and DFIR work!

" It's a great blue team hands-on course! From a content perspective, it is well written and structured. It offers a very nice blend of various skills of Cyber Defense. The strength of CyberDefenders resides in its labs! It prepares you to do the job, not just teach a bunch of theories and tools."

"Cyber Defenders website have some good free labs for Purple/Blue Team including:
SIEM, Malware Analysis, Forensic, Reversing, OSINT, Packet Analysis, Malicious Document Inspection"

"Certified CyberDefender (CCD) is really awesome, and the content is relevant (and huge). Training labs are also challenging, and adapting the Defende Smarter, Not Harder way of thinking (credits to: Muhammad Alharmeel)."

" Quality content and amazing labs without the fluff! The Certified CyberDefender (CCD) course is made up of excellent quality content. It reminds me of a SANS course, with concentrated technical details without the fluff of other courses."



Empower your CyberDefense/Blue team skills and learn from established industry veterans.

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Frequently asked questions

What is CyberDefenders?

CyberDefenders is a training platform focused on the defensive side of cybersecurity, aiming to provide a place for blue teams to practice, validate their skills, and acquire the ones they need.

We provide three primary services: a live CTF hosting platform (BlueRing), a professional training platform (BlueDemy), and a hands-on practice area (BlueYard).

BlueYard is is a community initiative to collect quality Blue Team challenges in one place to make it easier for defenders to practice with quality resources and make these challenges live forever.

If you have a blue team/threat hunting/digital forensics/incident response/threat intel/malware analysis challenge, reach out via our Discord server #submit-challenge channel.

Challenges are blue team exercises meant to provide a way to practice CyberDefense skills. They come in different formats such as attack investigation (SIEM style), PCAP analysis, memory analysis....etc. Each challenge has its scenario and list of questions. Answering questions correctly requires going through an investigation scenario, analyzing data, and extracting the right piece of information.

Sure, we encourage fellow defenders to create blue team challenges, and we will publish them under their names. If you master a specific defensive skill, why not let others know about it, be it SIEM, log analysis, packet analysis, reversing, forensics, or engineering. Trust us; the community is hungry for quality resources. If you have something in mind but do not where or how to start, please get in touch to discuss it further.

BlueYard is entirely free to play. BlueRing is free for educational institutions and non-profit organizations. Bluedemy training's fees depend on the course topic and delivery method.