11B-X-1371
Videos
11B-X-1371 is a 2015 viral video sent to GadgetZZ.com, the Swedish tech blog that publicized it. The black-and-white video is two minutes in length; its title came from the plaintext of a base64 strin
An image from the video
Interior of Zofiówka Sanatorium similar to that used in the video, 2010
A seventeenth-century depiction of a plague doctor
Cicada 3301
Videos
Cicada 3301 are three sets of puzzles posted online under the name "3301" between 2012 and 2014. The first puzzle started on January 4, 2012, on 4chan, and ran for nearly a month. A second round began
11B-X-1371
…it contained only six binary files. The puzzle was partially solved at the time of publishing, leading to a TOR hidden service, which did not respond. Cicada 3301, the identity claimed by a group, about whom little else is known, that has posted several cryptological puzzles on the Internet in the mid-2010s looking…
Cicada 3301 logo
The first message of Cicada 3301 posted on 4chan, beginning the first set of puzzles