An anonymous group posted internet puzzles to recruit code-breakers, then vanished
Cicada 3301 is the name of “three sets of puzzles posted under the name ‘3301’ online between 2012 and 2014.” The first appeared on 4chan on January 4, 2012, and ran for nearly a month; a second came in 2013, and a third in 2014. “The third puzzle remains unsolved.” The stated aim was to recruit “intelligent individuals” through a chain of challen…
