Modeling and Analysis of Worm and Killer-Worm Propagation Using the Divide-and-Conquer Strategy

A new approach to fight against Internet worms through the use the worm-killing worm has been presented. This paper attempts to model the interaction between the two worms using the divide-and-conquer strategy. We extends the idea of the killer-worm and divide it into three basic types. 1) Patching type: It only installs the patches on the susceptible machines; 2) Predator type: It only kills the worm (it may also patch the infected machines); 3) Composition type: It does both the jobs. The state transition diagram of the two worms and a mathematical model for every type are given. The results by dynamic simulation with the help of MATLAB are obtained.