About the Book: Steganography: Recent Advances
"Steganography is the art and science of hiding information by embedding
messages within other, seemingly harmless messages. It works by replacing bits
of useless or unused data in regular computer files (such as graphics, sound,
text, HTML, or even floppy disks) with bits of different, invisible information.
This hidden information can be plain text, cipher text, or even images.
Steganography sometimes is used when encryption is not permitted. Or, more
commonly, steganography is used to supplement encryption. An encrypted file may
still hide information using steganography, so even if the encrypted file is
deciphered, the hidden message is not seen. This