A Dynamic, Broad Spectrum Approach to Covert Channels
Christopher Hoffman · RIT Scholar Works (Rochester Institute of Technology) · 2013
In most covert channel systems, bandwidth is sacrificed for covertness. By using a dynamic, broad spectrum approach it was possible to use multiple covert channels to create a larger pipeline for data transmission. This approach utilized a monitor to determine how much data the network would be able to support before suspicion would be drawn to the change in traffic utility. The system then dispersed this traffic to each protocol proportionately using their monitored utility as a guide. A feedback channel was also utilized to determine if channel transmissions were successful and disabled any channels for future use that the network security blocked. In this way, a robust channel system was created that also increased bandwidth of communication.