An Adaptive Multiexecutors Scheduling Algorithm Based on Heterogeneity for Cyberspace Mimic Defense

With the rapid development of network technology, the traditional defense of “mending the fold after the sheep have been stolen” cannot accurately prevent various potential threats and attacks in cyberspace. At the same time, cyberspace mimic defense (CMD) makes the system uncertain and dynamic in time and space to effectively defend against potential attacks. As the key technology of CMD, the scheduling algorithm still needs to be improved in reliability and active defense. Aiming at current problems, this paper first innovatively proposes a new heterogeneous measure algorithm HVTG combined with a vulnerability topology graph, which measures the heterogeneity of executor set in a fine-grained manner. Then, based on the historical confidence, heterogeneity, and minimum sleep time of the executor, we propose an adaptive multi-executors scheduling algorithm (HHAC) to better defend against various attacks. Finally, combining with Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation, this research proposes a comprehensive evaluation model and fill in the gap of the evaluation model of the scheduling algorithm. Theoretical analysis and simulation results show that the HHAC performs well on the system dynamics, probability of system failure, and reliability, which is conducive to the development of CMD.