电子政务系统信息安全策略研究

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1、中国科学技术大学博士学位论文电子政务系统信息安全策略研究姓名：朱卫未申请学位级别：博士专业：管理科学与工程指导教师：梁樑;王卫平20060401中国科学技术大学博二}学位沦文摘要率与数据包采集速率不匹配，以及检测所需成本的限制，基于网络的入侵检测系统在收集用于检测的网络数据包时，必须选择有效的采样策略。文章引入博弈模型框架上的原始入侵数据包采样策略，在此基础上再进行分析和扩展。文章针对单一采样策略的缺陷与不足，引入风险管理的思想来分析在决策者不同效用偏好情况下的采样策略选择问题，并且通过具体的电子政务应用实例，说明了此采样策略的有效性。

2、最后，对全文进行总结和展望。关键词：电子政务；信息安全：风险管理；投资策略；入侵检测；博弈模型；采样策略中国科学技术大学博士学位论文摘要AbstractInformationtechnologyisthemostadvancedfactorofproductivityintheworldWiththedevelopmentofcomputerandnetworktechniques，E—governmentbecameareality．E·governmentisconstructedonthenetworkplatformbasedo

3、nintemettechnology，includinggovernment·innemet，government-extranetandWWW．TheInternetprovidesUSmanykindsofservices，butitisaglobenetworkwithoutanyuniformadministrationandhasalsobeenanenablingmediumforcomputer—basedattacks．Itmakespossibleformanycriminalstocommittheircrimesu

4、singtheinternetTheapplicationofe-governmentisfacingagreatchallengeInthesedays，therearealotofresearchesone--govemmentandinformationsecurityinourcountryandoverseasfocusedonthefacetoftheories，techniquesandlaws．Inthispaper，wechoosetwospecialaspectsduringtheinformationsecurit

5、yconstructingperiodofe‘governmenttoresearch．Themaincontentissummedupasfollows：Thefirstchaptersummarilyanalyzesandintroducedtheresearchbackground，thedomesticandforeignresearchactualityandstructureofthisarticle．Thesecondchapterpresentsthebasicconceptionofe—governmentandthe

6、potentialinformationsecurityquestionsofe·governmentsystembythenumbersThethirdchapterofthispaperintruducesacost·benefitbasedmodelthatdeterminestheoptimalamounttoinvesttoagivensetofinformationintheE-governmentsystemfromtheangleofsecurityriskmanagement．Italsoanalyzessomeimp

7、ortantpointstopayattentionduringinvestingininformationsecuritybythepropertiesoftwobroadclassesofsecuritybreachprobabilityfunctions．Theresultoftheresearchtellsthatgovernmentsshouldchoosedifferentinvestmentstrategiesencounteringdifferentinformationsetswithvarietydemandsord

8、ifferentsecuritybreachprobabilityfunctions．Inthelastpart，itprovidestwofeasiblesolutionscorrespondingtOt