Information security measures and regulation research

In order to analyze the online enterprises information security optimal management measures quantitatively, a information security decision model is constructed. Based on the online firms information security decision analysis, found that the information security measures investment is proportioned to firm online business scale, Lots of online small-and-medium-enterprises become huge threads to Internet because they are without incentive investment in security measures. When firms are attacked by independent threads, the enterprises can deploy security measures optimization respectively, but net attacks are contagious threats, the enterprises will loss enormous profits in spite of deployed security measures. Then government regulation is necessary. Government takes taxes and subsidy strategy to realize social optimal welfare, the comparing difference regulation results with complete and incomplete information are proposed in the model.