Let’s build the best blue team learning platform, together

LetsDefend provides lots of different free content about the blue team to better the community and a safer cyber world. With dedicated maintainers and lots of contributors, our goal is to create the best blue team learning platform on the web. Community-driven content will be free forever.

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Create a Challenge

Build out a new challenge on a track's roadmap. Have fun making interactive content that thousands of people will practice.
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Create a Course

It helps to people learn new things online.
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Create a Quiz

With new quizzes, people can evaluate their knowledge.
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Create a Walkthrough

Let other people understand how to investigate incidents/challenges.
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Proof Read and Update

Never contributed to a project? Give this a go. We'll help you submit your contribution.
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Find Some Bugs

Find bugs and make improvements to concepts and exercise across LetsDefend. Help students have a smooth and error-free experience
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Contributors

Blue team heros

Bret Witt

SENIOR THREAT ANALYST

I am an infosec professional that took up creating YouTube videos on the LetsDefend and CyberDefenders platform to try and give back to the community. I have protected home, small business, and up to Fortune 50 enterprises and am always looking for a challenge or CTF.

Julien Garcia

SOC MANAGER - IT SECURITY CONSULTANT

Like Incident Response and Digital. Windows Addict. Do the best to be prepare for the worst.




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Bohan Zhang

SOC ANALYST

I am an infosec junkie who loves to keep the cyber criminal out of your network!





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Domiziana Foti

SECURITY ANALYST

She solves security alarms with one cup of tea at a time.


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Sylvain Meurot

SOC ANALYST

Attracted by the unknown. Passionate, determined and curious.



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Abdullah Yasin

CYBERSECURITY CONTENT ENGINEER

Hi, I am Cyberjunkie and I love Blue side of Cyber. I like to create Forensics and SOC related challenges to contribute to cybersec community. I also have Pentesting experience and like to always build upon my knowledge.