Definition: The word proxy, as it relates to information security, means concealing the identity and maintaining the anonymity of an Internet user, computer, server or network. A user first accesses a node on a network and contacts a server that has the capability to provide the desired level of functionality (i.e. surfing on the web) for users. The “server-in-between” would work as the mediator. The computer that made the original request remains unspecified.

Its Relevance: Crackers can install service like the one described on a key system component for malicious purposes without the knowledge of those who are responsible for maintaining the confidentiality, integrity and availability of information resources. The crackers could, in theory, represent themselves as legtimate customers or as the official contact point in the business.

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