Date Added: Apr 2011
Containment of worms constitutes an important challenge in mobile wireless networks as recent outbreaks have revealed actual vulnerabilities. The authors introduce a defense strategy that quarantines the malware by reducing the communication range. This counter-measure confronts them with a trade-off: reducing the communication range suppresses the spread of the malware, however, it also deteriorates the network performance. They model the propagation of the malware as a deterministic epidemic. Using an optimal control framework, They select the optimal communication range that captures the above tradeoff by minimizing a global cost function.