Analysis of Different Steganography Algorithms and Security Issues

The data transfer through internet aims to provide faster data transfer rate and accuracy of data being transferred. In addition to it when security of the data is prime concern while communicating without any alterations, the data transfer technique aims to provide sufficient security while transferring data which is achieved by employing certain approaches and one such approach is steganography which is discussed in this paper. Steganography is an encryption technique used to hide only the messages (that requires to be kept secretive) in innocent looking public communication such as in image so that their presence remain undetected and protect them from prevailing security attacks. In this paper we tend to present the comparative analysis of different steganography algorithms such as DCT transform, Wavelet transform etc. and also discuss various security issues involved and hence evaluate the existing techniques limelight and drawbacks.