Due to the frequent changes of network technology and information technology to promote the overall development of society, the rapid expansion of network scale, the emergence of a large number of network hackers, viruses, etc., seriously threaten our information security, DDoS attack victims are difficult to defend against, and attacks can damage victims’ money, services and reputation. The attack caused the normal use. Deploying high-defense servers can indeed effectively defend against DDoS attacks, but the cost of high-defense servers is quite expensive; although deploying low-defense servers is low in cost, the defense effect is poor. Therefore, this paper conducts a simulation of the economic losses caused by hacking, aiming to help enterprises make decisions and adopt a more reasonable ratio of high-defense and low-defense servers, so that the maintenance cost of the server and the economic loss caused by the intrusion are the same. and minimum, the total economic cost is minimum.