What makes a good CTF challenge?

A Capture The Flag (CTF) challenge is a specific task or problem designed to test participants’ skills in various areas of cyber-security. You can see it as a compute science puzzle, problem or enigma.

No, it’s not about 0-days

While many assume that solving CTF challenges requires uncovering novel vulnerabilities and exploits, in truth, challenges only very (very) rarely demand the implementation of a 0-day exploit (actually, I’ve only seen that in Real World CTF). At most, typically …

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