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  • picoCTF - CMU Cybersecurity Competition
    picoCTF 2025 is a 10-day competitive CTF open to anyone, with prizes available to eligible teams picoCTF gamifies learning hacking with capture-the-flag puzzles created by trusted computer security and privacy experts at Carnegie Mellon University
  • What is a CTF - CTF Handbook - CTF101
    Capture the Flags, or CTFs, are computer security competitions Teams of competitors (or just individuals) are pitted against each other in various challenges across multiple security disciplines, competing to earn the most points Why play CTFs?
  • CTF for Beginners What is CTF and how to get started!
    CTF (Capture The Flag) is a kind of information security competition that challenges contestants to solve a variety of tasks ranging from a scavenger hunt on wikipedia to basic programming exercises, to hacking your way into a server to steal data
  • Hacker101 CTF
    If this is your first CTF, check out the about or how to play page or just get started now! The Hacker101 CTF is a game designed to let you learn to hack in a safe, rewarding environment Hacker101 is a free educational site for hackers, run by HackerOne
  • Google CTF
    What is the Google CTF? What is the prize? How does it work? Is GoogleCTF beginner-friendly? Where can I ask a question?
  • Why Is Capture the Flag (CTF) Important in Cyber Security? - EC-Council
    In cyber security, capture the flag (CTF) is a popular competition and training exercise that attempts to thoroughly evaluate participants’ skills and knowledge in various subdomains The goal of each CTF challenge is to find a hidden file or piece of information (the “flag”) somewhere in the target environment
  • Home - CTFlearn - CTF Practice - CTF Problems - CTF Challenges
    Learn and compete on CTFlearn
  • 247CTF - The game never stops
    247CTF is a security learning environment where hackers can test their abilities across a number of different Capture The Flag (CTF) challenge categories including web, cryptography, networking, reversing and exploitation




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