Dec 4: Language of Us

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Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the greek words steganos, meaning "covered, concealed, or protected", and graphein meaning "writing".
The first recorded use of the term was by johannes trithemi|js in his steganographia, a treatise on cryptography and steganography, disguised as a book on magic. generally, the hidden messages appear to be something else: images, articles, shopping lists, or some other cover text. for example, the hidden message may be in invisible ink between the visible lines of a private letter. some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to kerckhoffs's principle.
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. plainly visible encrypted messages - no matter how unbreakable - arouse interest, and may in themselves be incriminating in countries where encryption is illegal. thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message.
Steganography includes the concealment of information within computer files. in digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. media files are ideal for steganographic transmission because of their large size. for example, a sender might start with an innocuous image file and adjust the color of every hundredth pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.

00101101 00101101 00101101 00101101 00101101

00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
001011010010110100101101001011010010110100101101

01001000010101100011000100110110001011010100111100110111011011110100100100101101
01010111001100110011010001101010001011010100001001001010010010000011011100101101
01100011010100110111011001101011001011010110010100110101010010000111101000101101

00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
00101101001011010010110100101101001011010010110100101101001011010010110100101101
001011010010110100101101001011010010

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