This is not code as in &quot;secret code for which you need a decoder ring&quot;. It is executable code that gets executed with one click inside your network, and with essentially full permissions.<p>Code that can go through is a bug. Usually a buffer overflow, but in this case, it&#x27;s a specification bug back from the days when the world wasn&#x27;t so networked.<p>Also, I think you meant steganography.