This sounds fascinating since progress does not tend to work that way. What is it about this problem that leads you to think it was solvable in the past but no longer?
This sounds fascinating since progress does not tend to work that way. What is it about this problem that leads you to think it was solvable in the past but no longer?
The name of the level is "the properties of a mirror" which hints that you need to find a mirror of the original site in order to solve the level, and I think that the mirrors are no longer online.
Note for anyone unfamiliar that this level is not at all representative of vortex - all the other levels are all hard core exploit implementation and not stego challenges. In general I don't like stego because I feel that it is more of "try to guess what I'm thinking" than solving interesting challenges.
I would assume that if this were the case someone who has already completed that level could check if where they found it was still up? Perhaps this is not the interpretation of the level name that the writers had in mind?