ctf.viblo.asia

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. in these challenges, the contestant is usually asked to find a specific piece of text that may be hidden on the server or behind a webpage. this goal is called the flag, hence the name! viblo ctf provides various of ctf-style challenges, which we call puzzles, to help you to improve your skills.