DNS Pinning Explained

I have been asked recently by Ronald Koh and some other guys to make a writeup on DNS Pinning, aka. circumventing the same origin policy with Anti DNS Pinning. Although this is nothing really new and some explanations of this do in fact already exist, I think it is a good idea to talk about it once again though for mainly two reasons.

Firstly, this theme is known for it's rather high complexity and only a very limited number of individuals actually understand what is behind it. Therefore bringing peoples attention on it would surely not be amiss.

Secondly, there is no bullet proof solution to protect against this and the more people understand what it is about, the higher are the chances that we'll come to a solution somewhen in future. Four eyes are likely to see better than two, so lets start.