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1、InformationSecurityandEconomicsinComputerNetworks:AnInterdisciplinarySurveyandaProposalofIntegratedOptimizationofInvestmentKantaMatsuuraInstituteofIndustrialScience,UniversityofTokyo(Japan)AbstractWhenwetakepartineconomicactivities(e.g.e-commerce)overanopencomputernetwork,weneedinfor

2、mation-securitytechnologies.Ontheotherhand,appliedcryptographyalsoneedseconomicapproachesalotofsecuritybreachesoccurduetoeconomicallyinsucientincentiveandtheresultantmis-management.Manyusersmayfeeluneasyaboutnancialuncertaintyofsecuritythreats.Information-securitymanagementisclosel

3、yrelatedwithnancialdeci-sionmaking.Inresponsetothebi-directionalrelevance,cryptographershaverecentlyno-ticedtheimportanceofstudyinginterdisciplinaryareabetweeninformationse-curityandeconomics.Thispaperrstlyshowsasurveyontheemergingarea,aswellasstatisticsinthetwoapparentlymostrelevan

4、tinternationalconferences.Afterthat,asanexamplethatishighlyrelatedtocomputationaleconomics,anintegratedoptimizationofinvestmentininformationsecurityandnancialinsuranceisproposed.Theauthorclaimsthattheareainvolvesgoodresearchsubjectsincomputationaleconomics.Keywords:informationsecurit

5、y,e-commerce,optimuminvestment,insurance.1IntroductionWhenwetakepartineconomicactivities(e.g.e-commerce)overanopencomputernet-work,weneedinformation-securitytechnologies.AgoodexampleisSecureElectronicTransaction(SET)foron-lineuseofcreditcardsintheSETSpecicationBooks[1]{[3],wecanseeh

6、owsignicanttheroleofinformation-securitytechnologiesis.Correspondenceto:Prof.K.Matsuura,InstituteofIndustrialScience,UniversityofTokyo,Komaba4-6-1,Meguro-ku,Tokyo153-8505,JAPAN.Tel.:+81-3-5452-6284,Fax.:+81-3-5452-6285,E-mail:kanta@iis.u-tokyo.ac.jp1Ontheotherhand,appliedcryptograph

7、yalsoneedseconomicapproachesalotofsecuritybreachesoccurduetoeconomicallyinsucientincentiveandtheresultantmismanagement[4],[5].Manyusersmayfeeluneasyaboutnancialuncertaintyofsecuritythreats.Information-securitymanagementiscloselyrelatedwithnancialdecisionmaking[6].Inresponsetothebi

8、-dire