The Internet is a vast, strange place, and it's full of unsolved mysteries. Here are some of the weirdest that continue to baffle us!

Cicada 3301

Cicada 3301 is one of the most notorious Internet mysteries. It is a name given to an enigmatic organization that posted a series of puzzles online to recruit codebreakers from the public. The purpose and origin of this organization remain unknown. Learn more about it from Wikipedia.

Bitcoin Creator, Satoshi Nakamoto

The true identity of Bitcoin's creator, Satoshi Nakamoto, is a major unsolved mystery on the Internet. Despite Bitcoin's widespread use and impact, nobody knows who Nakamoto is or if it's even a single person or a group. Find more details on BBC News.

The Markovian Parallax Denigrate

The Markovian Parallax Denigrate is the Internet's oldest mystery. It consists of seemingly random messages posted to Usenet groups in the early 1990s. The meaning behind these messages is still unclear. Read more about it on Daily Dot.

The Oct282011 Website

This website appeared in 2011 with strange symbols, countdowns, and cryptic messages. Many speculated that it predicted a doomsday event, while others believe it was an elaborate alternate reality game. More on Gizmodo.