Its only illegal to be hacking if it is a system that the person paying you to hack doesnt own, so with no specifics, this thread isnt illegal.

Its like if I asked a question how best to make 100s of copies of a music CD, it could be priacy or not depending on if I owned the copyright, so without any details of it I was the artist or not, it wouldnt be beyond the rules of the forum to discuss it.