Cicada 3301: The Internet's Most Mysterious Recruitment Puzzle
On January 4, 2012, an anonymous message appeared on 4chan claiming to seek highly intelligent individuals. What followed was an international trail of cryptography, steganography, obscure literature, telephone numbers, Tor websites, and physical clues placed around the world. The group called itself 3301. More than a decade later, nobody has conclusively established who created Cicada 3301, what organization stood behind it, or what happened to the people who reached the end.