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1、CHAPTER9MultilateralSecurityPrivacyisatransientnotion.ItstartedwhenpeoplestoppedbelievingthatGodcouldseeeverythingandstoppedwhengovernmentsrealisedtherewasavacancytobe?lled.—RogerNeedhamYouhavezeroprivacyanyway.Getoverit.—ScottMcnealy9.1IntroductionOftenourgoalisnotto
2、preventinformation?owing‘down’ahierarchybuttopreventit?owing‘a(chǎn)cross’betweendepartments.Relevantapplicationsrangefromhealthcaretonationalintelligence,andincludemostapplicationswheretheprivacyofindividualcustomers’,citizens’orpatients’dataisatstake.Theyaccountforasigni?
3、cantproportionofinformationprocessingsystemsbuttheirprotectionisoftenpoorlydesignedandimplemented.Thishasledtoanumberofexpensive?ascos.Thebasicproblemisthatifyoucentralisesystemscontainingsensitiveinformation,youriskcreatingamorevaluableassetandsimultaneouslygivingmor
4、epeopleaccesstoit.Thisisnowapressingproblemintheworldof‘Web2.0’asonlineapplicationsamasspetabytesofpeople’sprivateinformation.Andit’snotjustGoogleDocuments;anumberoforganisationsplantowarehouseyourmedicalrecordsonline.MicrosofthasannouncedHealthVault,whichwillletyourd
5、octorsstoreyourmedicalrecordsonlineinadatacentreandgiveyousomecontroloveraccess;otherIT?rmshavebroadlysimilarplans.Yetprivacyactivistspointoutthathoweverconvenientthis275276Chapter9■MultilateralSecuritymaybeinanemergency,itgivesaccesstoinsurancecompanies,governmentage
6、nciesandanyoneelsewhocomesalongwithacourtorder[1332].Sowhataretherealissueswithsuchsystems,shouldtheybebuilt,ifsohowshouldweprotectthem,andarethereanyprecedentsfromwhichwecanlearn?Onelessoncomesfrombanking.Intheolddays,aprivateinvestigatorwhowantedcopiesofyourbankstat
7、ementshadtosubvertsomeoneatthebranchwhereyouraccountwaskept.Butafterbankshookedalltheirbranchesuponlineinthe1980s,theytypicallyletanytellerenquireaboutanycustomer’saccount.Thisbroughttheconvenienceofbeingabletocashacheckwhenyouareoutoftown;butit’salsomeantthatprivatee
8、yesbuyandsellyourbankstatementsforafewhundreddollars.Theyonlyhavetocorruptoneemployeeateachbank,ratherthanoneateachbranch.An
