On January 5th, 2012, an image post was made on 4chan's /x/ board that was signed "3301".
This site is a collection of the cryptographic puzzles and messages from the group known as 3301. We will go over everything released by them and, for those puzzles that have been solved, how the solutions have been found. The explanations of the puzzles will be straightforward and expect a small amount of knowledge of the terms used (such as PGP or XOR) to read straight through them. For those that do not know what a term means or want to know more, there will be links to examples and more information when appropriate so everyone should be able to follow along. If you want to start from the beginning, please visit the page about 2012's puzzle. For those that want to jump right in, the Liber Primus is the most recent puzzle still unsolved.