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# all my knowledge about capture the flag [capture the flag](https://en.wikipedia.org/wiki/Capture_the_flag_(cybersecurity)) is a wonderful activity in which one gets together with a merry band of friends to solve puzzles for the sake of solving puzzles and learning things. such puzzles are often security-related. capture the flag competitions ("ctfs") are hosted by established teams, or organizations, or corporations. there is typically at least one running at any given time: although most usually start fridays and run for a day or two. while competing in ctfs can be group work: practice is overwhelmingly a solo activity. to learn how to play ctfs, one must learn to be very comfortable learning on their own.