Steganography by Neil F. Johnson

Steganography

                    We explore new steganographic and cryptographic
                    algorithms and techniques throughout the world to
                    produce wide variety and security in the electronic web
                    called the Internet.

and apply some word shifting algorithm (this is sentence S1).

                    We explore new steganographic and cryptographic
                    algorithms and techniques throughout the world to
                    produce wide variety and security in the electronic web 
                    called the Internet.

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History

By overlapping S0 and S1, the following sentence is the result:

                    We explore new steganographic and cryptographic
                    algorithms and techniques throughout the world to
                    produce wide variety and security in the electronic web
                    called the Internet.

This is achieved by expanding the space before explore, the, wide, and web by one point and condensing the space after explore, world, wide and web by one point in sentence S1. Independently, the sentences containing the shifted words appear harmless, but combining this with the original sentence produces a different message: explore the world wide web.

Next Section: 3. PC Software that Provide Steganographic Services

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