a Cross-Realm Architecture (CRA) was proposed. CRA strictly restricts bots' interactions across different realms and hides the origins of bots' interactions by IP spoofing. Considering the infeasibility of monitoring the global Internet and the difficulty of IP traceback
it is very hard for defenders to track CRA in the real world. The simulation results show that compared to recent popular P2P botnet architectures
CRA has better anti-tracking performance and robustness.