The Real Cicada 3301, The Assassins of Numbers

One of the most favored vehicles for communication between members of a secret society is cryptographic messages.  They have been used throughout history by many secret societies and societies that aren't so secret such as the CIA, the FBI, and the DHS.  They are all the alphabet organizations that exist in the world.  They each have their set of cryptography and multiples at that.  A lot of them have not been able to be cracked but there are many of them that have been able to be cracked.  Such is the case with the code that was posted by an entity that is simply known as Cicada 3301.   Cicada 3301 first rose to popularity after posting a link on 4Chan that eventually led contestants on a wild good chase through a system of books, websites and, physical locations and songs.  There is a lot more information on the contest itself that you can look up on Google.  There are technicalities that you can read about and walkthroughs of how each puzzle could possibly be solved.  There is no s