[dpivchik]

You can read book by Julian Assange, that was first published in 2012, the year of emergence of Cicada 3301, and named “Cypherpunks: Freedom and the Future of the Internet” (https://www.amazon.com/Cypherpunks-Freedom-Internet-Julian-A... and compare its content to the message, that was sent to the winners of Cicada 3301 competition in 2012 (https://pastebin.com/RmqxWcnB) or 2013 (https://pastebin.com/rn4gTF1Z).

[hulahoof]

Thanks exactly what I was after!