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Professional Capture The Flag — offensive and defensive security challenges for all skill levels

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Recent Solves

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IPv6 Neighbor Discovery Recon network
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Windows Event Log Analysis Forensics
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Hidden Service network

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Challenge Categories

Web 14 challenges
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Rev 10 challenges
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OSINT 10 challenges
network 11 challenges
Mobile 14 challenges
Cloud 14 challenges
web3 12 challenges
Linux 9 challenges
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