Minimizing Security Threats in Multimedia Systems

This paper describes security enhancement of multimedia data using steganography. The proposed method is based on a new method of embedding ASCII text characters into moderatory bits of IEEE standard multimedia images, which are used as cover media. Simulation results for peak signal to noise ratio (PSNR) and mean square error (MSE) for text data embedding into different moderatory bit positions are presented. It is shown that the proposed method of data embedding offers superior robustness against external attacks as compared to LSB insertion technique without compromising the perceptual quality of the host multimedia image. Therefore our proposed method can find potential use in security enhancement of multimedia image