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Learning pathsShort tracks from zero to confident FoundationsTerminal, web, encodings and tools Teach on CTF-ORIONShare lessons, challenges and mentoring Learning for everyoneFree, self-paced, every level welcome Start with FoundationsTen short modules that get you ready for your first flag. Start learning
ChallengesFile-based puzzles, solve any time ScoreboardsAll players, teams and solo EventsTimed competitions, when they run TeamsSolo or up to 25 teammates First event on 1 Jan 2027Starts at 00:00 Bangladesh time. See details
Host your CTFYour event at ctforion.com/your-org Affiliated teamsCTFBD and partner teams Fair playRules for players, teams and events MentoringHelp beginners get unstuck Bring your own machinesKeep boxes on your servers, run the event on ours. Read the proposal
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Steganography

Messages tucked inside images, audio and documents, and the tools that bring them out.

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