Cicada 3301
Book Series

Cicada 3301 is a nickname given to an organization that on three occasions has posted a set of puzzles to recruit codebreakers from the public.

The book series consists of three separate books from different years; 2012,2016, and 2019. 

The first book (the book in the images) is a book of french folds; since they are a secret organization the information is hidden with the folds. It is printed on 45 GSM paper to represent the computer log paper as most their puzzles revolved around computers.