13HIDING DATA WITH STEGANOGRAPHY

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The word steganography is a combination of the Greek words steganos, which means to cover, conceal, or protect, and graphien, which means to write. In security, steganography refers to techniques and procedures used to obfuscate (or hide) data by implanting it within other data, such as an image, so it can be extracted at a future point in time. As part of the security community, you’ll explore this practice on a routine basis by hiding payloads that you’ll recover after they are delivered to the target.

In this chapter, you’ll implant data within a Portable Network Graphics (PNG) image. You’ll first explore the ...

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