A CLOSER LOOK AT CATEGORIES OF STEGANOGRAPHY TECHNIQUES.

The cryptography and steganography are techniques to provide information security. Both of these techniques are vulnerable to different kinds of attacks. It is obvious that the success rate of an attack is higher in the case of the former since it discloses the very presence of the content though it is encrypted. Why the success rate is high in case of cryptography is associated with human psychology. It prompts man to find out something when the presence of the same is known and hence it can be said that cryptography is more vulnerable to attack than steganography. This attracts researchers and students to select steganography as their area when information security is the matter of concern. This chapter describes the complete details of categories of steganography techniques that can open the door for entering into the world of steganography where secret is embedded in seemingly innocuous cover medium.