Steganalysis of Internet data, a feasibility study

This paper addresses the feasibility of applying realtime steganalysis to the Internet data. To reach a practical solution, we have employed offline procedures to minimize the volume of the data to be processed by an online real-time system. Possible offline services that can be provided to an online system then led us to appropriate network designs for the online system. To go into detail of the online systems, we have carefully analyzed some well-known, state-of-the-art steganalysis algorithms and estimated their processing power and memory requirements. Some formulas are derived to relate the network bit rate with the number of the processing units, their processing power, and memory size. We have then integrated the online and offline subsystems in standard network architectures to provide steganalysis services for different organizations with different requirements. It is shown that high data analysis rates can be achieved using reasonable HW cost.