Digital is used to describe anything that can be stored electronically whether it is an image, data file, or sound. Steganography means to conceal a message in digital format. Digital steganography is used in graphic, sound, video, HTML, and text files. It is the process of hiding a message with a larger one so that someone does not know the content of that hidden message. The three components of the basic structure of digital steganography is: the carrier, the message, and the key. The carrier can be a painting, image, mp3, or basically any other type of media. The carrier is what will carry the hidden message. The key is what is used to decipher the hidden message. The key can be anything from a password, pattern, or even a black light.
Image Steganography allows two parties to secretly communicate. It has many applications in the high-tech world. One of the main concerns with people on the internet is privacy and anonymity. Image steganography can be used to transport top-secret of high-level documents within the government. Unfortunately, image steganography can be used for bad things too. Hackers can use it to send viruses and trojans to compromise machines and terrorists as well as other organization use it to communicate secretly.
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