A Comparative Study of Various image Steganographic Techniques Used for Information Hiding
The staggering growth in communication technology and usage of public domain channels (i.e. Internet) has greatly facilitated transfer data. However, such open communication channels have greater vulnerability to security threats causing unauthorized information access. Traditionally, encryption is used to realize the communication security. Today HTML pages and spam emails are also being used for steganography. With the help of steganography they can hide the information which is paramount and confidential for them. Steganography is the art of hiding the fact that communication is taking place, by hiding information in other information.