Covert Flow Trees: A Visual Approach to Analyzing Covert Storage Channels
IEEE Transactions on Software Engineering
A note on the confinement problem
Communications of the ACM
SP '94 Proceedings of the 1994 IEEE Symposium on Security and Privacy
DIMSUMNet: New Directions in Wireless Networking Using Coordinated Dynamic Spectrum Access
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Methodologies for Detecting Covert Database
IIH-MSP '08 Proceedings of the 2008 International Conference on Intelligent Information Hiding and Multimedia Signal Processing
An information-theoretic and game-theoretic study of timing channels
IEEE Transactions on Information Theory
An attack-defense game theoretic analysis of multi-band wireless covert timing networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
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In this paper, we study tactical covert timing networks with dynamic spectrum access capability amidst adversaries. We present a two-tier game framework to model the attackdefense scenario. There are very few studies available in the literature on covert timing channels with multiple parallel transmissions. This paper presents a new paradigm combining the time diversity provided by covert timing channels and frequency diversity provided by dynamic spectrum switching, to combat jamming. The dynamic sensing of different spectrum bands and subsequent jamming by the attacker, and the camouflaging defense by the covert network are modeled as a two-tier game. We present a dynamic minimax camouflaging strategy for the covert network and sensing and jamming strategies for the attacker. We compare the performance of our proposed equilibrium strategies with that of other well known strategies and demonstrate the effectiveness of our proposed solution. We use theoretical analysis, simulations and testbed experiments to illustrate our ideas.