Arrival’s design team brought in Stephen Wolfram, founder of Mathematica coding software, and his son, Christopher Wolfram, to analyze the language the way Louise and Ian might. They reasoned that each logogram could be cut up into 12 pieces.
HackTheBox (https://www.hackthebox.com/) is the largest and most active hacker challenge website. Focussed mainly around black box pentesting of vulnerable Windows and Linux machines, but they have lots of other types of content these days too such as CTF challenges and paid lab environments.