A Review on Image Steganography

This paper is concerned with an important aspect of data security, known as steganography. In steganography, a secret message is hidden into another data file such as image, video, audio, or text file. The advantage of steganography over cryptography is that the intended secret message does not attract attention to itself as an object of scrutiny. In this paper, the different steganography techniques and related security issues are reviewed. The main focus is made on the most widely used technique called the Least Significant Bit (LSB) approach. The details of the LSB algorithm are presented, and it is implemented by using a MATLAB code. Text data has been embedded into a cover image, after the embedding process the stego image is generated that seems to be the same as the original cover image with only slight changes that Human Visual System cannot detect.