CICADA 3301 Types of clues

The Cicada 3301 clues spanned many different forms of communication media, including the internet, telephone, original music, bootable Linux CDs, digital images, physical paper signs, and pages of unpublished cryptic books written in runes. One book, titled Liber Primus, literally “first book”, contains many pages, only some of which have been decrypted. In addition to using many varying techniques to encrypt, encode, or hide data, these clues also referenced a wide variety of books, poetry, artwork and music.^[1] Each clue was signed by the same OpenPGP private key to confirm authenticity.^[9][19]