Bobok I. Method to improve detection efficiency of embedding confidential information

The dissertation is devoted to resolving an important practical problem that is to improve detection efficiency of embedding confidential information that embedded by LSB-method including low hidden capacity by developing new steganalysis method for cover-images, that saved in lossy formats, based on general approach to analysis of status and functioning of information systems. The object - organizational processes and the detection of covert communication channel within the open. The subject - steganalysis method for detection of embedding confidential information in digital images. Developed steganoanalytic method is highly effective compared to current existing analogues for detection of confidential information (including hidden capacity lower than 0.25 bit per pixel) regardless of lossy formats that used for saving cover-image, and area of transformation - spatial or frequency. Also proposed method allows effectively detection of steganographic methods different from LSB, results of perturbation actions such as noise, blur, etc. that often are the integral parts of post-processing fraudulent content. The practical significance of the work is finishing up scientific results to the specific algorithms that can be used as components of information security systems, information systems of different filling any enterprise, company, etc.