Which term describes the action of confirming identity access to an information system?

The action of confirming identity access to an information system is known as authentication. Authentication is a critical process in information security that involves verifying the identity of a user, device, or system trying to access resources. This process ensures that only authorized individuals can gain access to sensitive data or functions within an information system.

Authentication can be achieved through various methods, including passwords, biometrics, tokens, or multi-factor authentication, all of which help to establish that the entity attempting to access the system is indeed who they claim to be. This is foundational to maintaining the security and integrity of systems, as it acts as a protective measure against unauthorized access.

In the context of the other terms, coordination does not specifically relate to identity confirmation; it generally refers to the organization of activities or efforts. Concept refers to an idea or principle but does not imply any action related to identity verification. Access merely indicates the ability to enter or utilize a system but lacks the focus on confirming the identity associated with that access. Thus, authentication distinctly represents the necessary step of identity verification in security practices.