On the Robustness of the Botnet Topology Formed by Worm Infection

摘要: Peer-to-peer botnets formed by worm infection have become a real threat to the Internet and are expected rampant in near future. In our previous work, we analyzed underlying botnet topology infection, without considering potential user defenses. this paper, extend study characterize evolution of structure when users patch or clean part infected hosts after all vulnerable machines compromised. Specifically, examine number peers an host size disconnected under random node removal through simulation. We find that patched cleaned, distribution follows closely exponential distribution, whereas isolated is power-law. Moreover, also evaluate simple countermeasure enhances robustness re-infection, show re-infection can significantly mitigate effectiveness patching cleaning on structure. believe such not only provide better understandings both strength weakness botnets, but prepare us for future attacks.