DNS Pinning explained
The same origin policy is an access restriction implemented in most modern browsers that prevents a script loaded from one origin to access documents from a different origin in any kind. Hence, it is neither possible to set nor get information from that foreign origin. However, since the time this security measure has firstly been initiated by I believe Netscape, security researchers have spent a significant amount of time to find ways to bypass this restriction. One of the results finally was Anti DNS Pinning and later on Anti-Anti-Anti DNS Pinning, both exploiting another security mechanism of modern browsers called DNS Pinning.
At Christian's weblog.
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