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1、PrivacyBreachAnalysisinSocialNetworksFrankNagleAbstractThischapteraddressesvariousaspectsofanalyzingprivacybreachesinsocialnetworks.Wefirstreviewliteraturethatdefinesthreetypesofprivacybreachesinsocialnetworks:interactive,active,andpassive.Wethensurveythevar-iousnet
2、workanonymizationschemesthathavebeenconstructedtoaddresstheseprivacybreaches.Afterexploringthesebreachesandanonymizationschemes,weevaluateameasurefordeterminingthelevelofanonymityinherentinanetworkgraphbasedonitstopologicalstructure.Finally,weclosebyemphasizingthe
3、dif-ficultyofanonymizingsocialnetworkdatawhilemaintainingusabilityforresearchpurposesandofferingareasforfuturework.KeywordsSocialnetwork·Privacy·Breach·Security·Anonymity1IntroductionOverthepast5–10years,onlinesocialnetworkshaverapidlyexpanded,andasofMarch2012thela
4、rgestonlinesocialnetwork,Facebook,hadover901millionactivemembers.1Thewealthofinformationuserspostintheirsocialnetworkpro-files,aswellastheunderlyingstructureofthenetworkitself,areappealingdatasetsforresearchersandalluringtargetsforcriminals.Duetotheattractivenessof
5、thesenetworkstobothgroups,researchershaverecentlybeguntostudymethodsforre-leasingthisdatainamannerthatmaintainstheprivacyoftheindividualsinthenetwork.Thischapterpresentsanoverviewofrecentworkinthisfield.Thedatausersdiscloseintheirprofilesiswideranging,andincludeseve
6、rythingfromemailaddressesandbirthdaystopoliticalinterestsandphysicaladdress.Twocasestudiesoftheinformationusersreveal[1,23]foundthatapproximately90%ofuserslistapartialorfullbirthdayaswellasanemailaddress.Thesepiecesof1FacebookNewsroomKeyFacts,http://newsroom.fb.co
7、m/content/default.aspx?NewsAreaId=22,accessedMay06,2012.F.Nagle(B)HarvardBusinessSchool,Wyss100,SoldiersField,Boston,MA02163,USAe-mail:fnagle@hbs.eduT.Özyeretal.(eds.),MiningSocialNetworksandSecurityInformatics,63LectureNotesinSocialNetworks,DOI10.1007/978-94-007-
8、6359-3_4,©SpringerScience+BusinessMediaDordrecht201364F.Nagleinformationcanbeusedbyanattackertostealtheuser’sidentity.Toallowtheuseofsuchnetworksforacad
