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 first internet puzzle started on January 4, 2012 on 4chan and ran for approximately one month. A second round began one year later on January 4, 2013, and then a third round following the confirmation of a fresh clue posted on Twitter on January 4, 2014. The stated intent was to recruit "intelligent individuals" by presenting a series of puzzles which were to be solved. No new puzzles were published on January 4, 2015. However, a new clue was posted on Twitter on January 5, 2016. In April 2017 a verified PGP-signed message was found: Beware false paths. Always verify PGP signature from 7A35090F. That message explicitly denies the validity of any unsigned puzzle, as recently as April 2017.
It has been called "the most elaborate and mysterious puzzle of the internet age" and is listed as one of the "top 5 eeriest, unsolved mysteries of the internet", and much speculation exists as to its function. Many have speculated that the puzzles are a recruitment tool for the NSA, CIA, MI6, a "Masonic conspiracy" or a cyber mercenary group. Others have claimed Cicada 3301 is an alternate reality game. No company or individual has taken credit for it or attempted to monetize it, however.
The stated purpose of the puzzles each year has been to recruit "highly intelligent individuals", though the ultimate purpose remains unknown. Some have claimed that Cicada 3301 is a secret society with the goal of improving cryptography, privacy and anonymity. Others have claimed that Cicada 3301 is a cult or religion. According to statements of several people, who claimed to have won the 2012 puzzle, 3301 typically uses non-puzzle-based recruiting methods, but created the Cicada puzzles because they were looking for potential members with cryptography and computer security skills.
Unidentified individuals have claimed to have completed the process, but verification from the organization was never made and the individuals making the claim have not been forthcoming with information. The first puzzle, of 2012, is claimed to have been solved by Marcus Wanner. According to Marcus Wanner, those who solved the puzzles were asked questions about their support of information freedom, online privacy and freedom, and rejection of censorship. Those who answered satisfactorily at this stage were invited to a private forum, where they were instructed to devise and complete a project intended to further the ideals of the group. He did not finish his work on a method of general decryption, and the website was removed.
The Cicada 3301 clues have spanned many different communication media including 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 have referenced a wide variety of books, poetry, artwork and music. Each clue has been signed by the same OpenPGP private key to confirm authenticity.
Authorities from the Los Andes Province of Chile claim that Cicada 3301 is a "hacker group" and engaged in illegal activities. Cicada 3301 responded to this claim by issuing an PGP-signed statement denying any involvement in illegal activity.
In July 2015, a group calling themselves "3301" claimed to have hacked Planned Parenthood; however, the group appears to have no association to Cicada 3301. Cicada 3301 later issued a PGP-signed statement stating they "are not associated with this group in any way" and also stated that Cicada 3301 does not "condone their use of our name, number, or symbolism". The hacker group later confirmed that they are not affiliated with Cicada 3301.
As the group has gained notoriety and public attention, many have asserted that the puzzles are an introduction to occult principles, and possibly even recruitment for a cult. Tim Dailey, a senior research fellow with the conservative Christian Family Research Council, analyzed the teachings of Cicada 3301, and stated, "The enigmatic Cicada 3301 appears to be drawing participants inexorably into the dark web of the occult à la Blavatsky and Crowley. At the heart of the enchantment is the counterfeit promise of ultimate meaning through self-divination."
The plot of "Nautilus", the September 30, 2014 episode of the TV show Person of Interest, featured a large-scale game very similar to the Cicada 3301 puzzles. Both feature a series of worldwide cryptographic puzzles, but as the title implies, these feature the image of a nautilus shell instead of a cicada logo.Person of Interest creator Jonathan Nolan and producer Greg Plageman stated in an interview that Cicada 3301 was the inspiration for the episode: "Episode 2, I'm particularly fascinated by the subject underneath it. Look up Cicada 3301 on the internet. It's a very interesting concept out there that we then put into a larger story that connects to our show."
The organization is the subject of an upcoming film entitled Cicada 3301, which was announced in 2018.
Twice there was music accompanying the Cicada clues. However, none of these pieces is part of the standard repertoire[clarification needed] and neither the composers nor performers have been identified. Certain patterns have emerged that indicate that the music itself may be a clue and that Cicada is attempting to establish a musical cryptogram in parallel with its other embedded information. TechGeek365 analyzed the structure of a number of the pieces and discovered that there are certain dyads (two notes sounding simultaneously), which, when corresponded with letters and numbers, reveal hidden messages.
Artists Rick Steff and Roy Berry of the band Lucero included a Cicada 3301-inspired song on their side-project album Superfluidity. The music video, directed by Charlie Fasano, featured artwork taken from the Liber Primus book by Cicada 3301.