What was the name of the competition?

Question

Geektimes

I remembered there was one post on Geektimes or Habrahabr. It talked about an anonymous competition on the Internet, which was held 3 times from 2011 to 2013. The essence of this competition was in solving riddles. For example, in one of them there was a picture with the inscription: "There is a hidden message in this picture." This message could be viewed by opening the picture through the editor. There were a lot of tasks and in one of the final ones there was a picture of a "butterfly".
They said something about themselves, I don’t remember anymore, but the text was something like this: “We don’t have a name, we don’t have a slogan and logo. We are not a company and an organization. We are an anonymous community,” I don’t remember further. What was the name of this article or contest? Maybe someone has a link?