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To demonstrate that you have a basic understanding of the structure of ZIP files, you will write a short report detailing any ways you can think of that could be used to hide data within the structure of ZIP files, without affecting the functionality of the archives themselves (you should still be able to unzip the archives without any errors being thrown). You do not have to demonstrate that the method works, you are just spit balling ideas. Try to be as creative as possible with your answers.