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1、computers&security28(2009)545–556availableatwww.sciencedirect.comjournalhomepage:www.elsevier.com/locate/coseSecuritythreatsscenariosintrustandreputationmodelsfordistributedsystemsFe′lixGo′mezMa′rmol*,GregorioMart?′nezPe′rezDepartamentodeIngenier?′adelaInformacio′nylasComunicaciones,Univer
2、sityofMurcia,30.071Murcia,SpainarticleinfoabstractArticlehistory:TrustandreputationmanagementoverdistributedsystemshasbeenproposedinthelastReceived17December2008fewyearsasanovelandaccuratewayofdealingwithsomesecurityde?ciencieswhichareReceivedinrevisedforminherenttothoseenvironments.Thus,m
3、anymodelsandtheorieshavebeendevelopedin3April2009ordertoeffectiveandaccuratelymanagetrustandreputationinthosecommunities.Accepted1May2009Nevertheless,veryfewofthemtakeintoconsiderationallthepossiblesecuritythreatsthatcancompromisethesystem.Inthispaper,wepresentsomeofthemostimportantandKeyw
4、ords:criticalsecuritythreatsthatcouldbeappliedinatrustandreputationscheme.WewillTrustdescribeandanalyzeeachofthosethreatsandproposesomerecommendationstofaceReputationthemwhendevelopinganewtrustandreputationmechanism.WewillalsostudyhowSecuritythreatssometrustandreputationmodelssolvethem.Thi
5、sworkexpectstobeareferenceguideDistributedenvironmentswhendesigningsecuretrustandreputationmodels.Threatstaxonomya2009ElsevierLtd.Allrightsreserved.1.IntroductionAnalyzingandstudyingsomeofthesemodels(Josangetal.,2007;SabaterandSierra,2005)werealizedthatthereareTrustandreputationmodelshaveb
6、eenrecentlyproposedbysomesecuritythreatsdirectlyrelatedtothisspeci?ckindofmanyresearchesasaninnovativesolutionforguaranteeingmodels,whicharecommonandapplicabletomostoftheseaminimumlevelofsecuritybetweentwoentitiesbelongingtoapproaches.adistributedsystemthatwanttohaveatransactionorNeverthel
7、ess,wealsonoticedthateachauthorproposedinteraction.his/herownthreatswhentestingtheirdevelopedmodels,Thus,manystudies,worksandmodelshavebeenrevealingthelackofacommonlyagreedprocessofcheckingdesigned,carriedoutanddevelopedinthisdirection,leadingtherobustnessofat
