信息安全的目标事对信息的保密性、完整性、可用性、的保持，这也是信息安全的基本的三要素（C、I、A）。此外其他属性也可以参与进来，如：真实性、可靠性、不可否认性。
The objective of information security is the confidentiality, integrity, availability and maintenance of information, which is also the basic three elements of information security (C, I, A). Other attributes can also be involved, such as authenticity, reliability, and non-repudiation.
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