CTFs are security competitions between teams coming from many countries. Those are some of "topics" that challenges/tasks during those competitions do cover: (

CTFs are security competitions between teams coming from many countries. Those are some of "topics" that challenges/tasks during those competitions do cover: (stolen from dev.to) Cryptography - Typically involves decrypting or encrypting a piece of data Steganography - Tasked with finding information hidden in files or images Binary - Reverse engineering or exploiting a binary file Web - Exploiting web pages to find the flag Pwn - Exploiting a server to find the flag Generally it requires to be very proficent at CS and Computers in general to compete at highest levels The more detailed description may be here: https://www.youtube.com/watch?v=8ev9ZX9J45A https://www.youtube.com/watch?v=8ev9ZX9J45A Here's ranking of teams: https://ctftime.org/ https://ctftime.org/ >https://dev.to/atan/what-is-ctf-and-how-to-get-started-3f04 https://dev.to/atan/what-is-ctf-and-how-to-get-started-3f04