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1、E-commerce security is a multilayer and dynamic process,which guards e-commerce supporting elements,such as computer system,network communication and application environment,not to be threatened.(1)Hacker attack(2)Computer virus(3)System vulnerability(1)Interception and theft of infmation(2)Informat
2、iong tampering(3)Spoofing(4)Denial act(1)Availibility(2)Confidentiality(3)Integrity(4)Authenticity(5)Privacy(6)Non-repudiation(1)Technical support security protocol layer Network service layer Encryption control layer Security certification layer Security protocol layer Application layer Digital envelopeDigital signatureMessage digestDigital timestampDigital certificateSSLAsymmetric encryptionSymmetrical encryption SETIntrusion detection Virus prevention FirewallConfidentialityIntegrityPrivacyNon-repudiationAvailabilityAuthenticity(2)Legal support(3)Institutional support