A858

In 2011, an unusual subreddit that exclusively included posts made up of strings of numbers and letters appeared on Reddit, sparking a mystery remarkably similar to the one mentioned earlier. The name of the subreddit and the account posting these comments were both made up of a seemingly random combination of numbers and letters, but it was more commonly known by its first four characters, A858.

It took almost a year for other people to become aware of the peculiar tale, but once they did, there was a flurry of eager conjecture about what might be the significance of this peculiar behavior. Shortly enough, a related subreddit named "Solving A858" developed, which was primarily used by amateur codebreakers. Only a small fraction of the tens of thousands of posts on A858 have ever been resolved, however they all seemed to contain unrelated random words or images.

Later, in 2016, a post with the simple title "The A858 Project Has Concluded" surfaced on the subreddit. You have the option to stop receiving updates. A while later, the same user provided a little more detail, admitting that they had been compensated by an unnamed company to post encrypted code puzzles for an unnamed purpose. Some assume this was an unsuccessful commercial prank, while others think the project is still in progress but at a different level.