Picoctf.org has a rating of 1.0 star from 1 review, indicating that most customers are generally dissatisfied with their purchases.
The site is supposed to teach you about cyber-security, but it fails in every way. It assumes that you have a deep knowledge of how linux works and all the commands, along with knowing how to edit the source code websites and how to exploit servers from a web page, the client side, how to code in python, how to reverse engineer programs, etc. After taking a 9 month-long course I could only get through 3-4 challenges before being completely stumped on every other challenge, even the beginner ones. I honestly don't know why we use this site.
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