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.

blue team community
  • Create a Challenge

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

    Explore tasks
  • Create a Course

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

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

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

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

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


Blue team heroes

  • 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.
  • Bohan Zhang
    SOC Analyst
    I am an infosec junkie who loves to keep the cyber criminal out of your network!
  • Domiziana Foti
    Security Analyst
    She solves security alarms with one cup of tea at a time.
  • Zaid-Ul-Hassan Shah
    Dedicated and hardworking blue team cybersecurity learner who loves to make things easy for himself and others around him.
  • Sylvain MEUROT
    SOC Analyst
    Attracted by the unknown. Passionate, determined and curious.
  • Andre Allen
    Content Creator
    Andre (AKA DrXploiter) is a passionate professional security analyst (SOC/Threat Hunter) who often makes blue team challenges for LetsDefend. He often enjoys malware analysis challenges in his own time.
  • 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.