The main security concept that describes the rights and privileges of a validated user is authentication.
Authentication and authorization can be described as two vital information security processes that administrators use to protect systems and information. Authentication verifies the identity of a user or service, and authorization determines their access rights. Authorization can be described as a process by which a server determines if the client has been permitted to use a resource or access a file. Authorization is often peering with authentication so the server has some concept of who the client is that is needed access.
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