I think that you'd have to be a serious hacker to even get into Cicada 3301. I like that it's pretty much a mystery. A government intelligence organisation could be behind it but it would be disappointing if they were because then it would just be some program that could be cut at any time, subject to beaurocracy and helping to make the world a sh*ttier place whereas if it were some group of computer hackers, it could potentially go on forever and becoming ever more of a mystery. Something we could speculate on endlessly, and I think it's the latter that would be more fun.