Woohoo!! Thanks so much!! 
Yeah, I’ve loved playing around with cybersecurity since I was a teenager. One of the first communities I helped manage was a hacking challenge site way back in the day, actually! I find them interesting because they expose you to so many facets of how computers, networks, operating systems, programming languages, encryption, and more work together, and really challenge you to think “outside the box.”
If you’re interested in a similar thing for learning Python programming, Solve Python | HackerRank seems to be a similar setup!