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

The term that describes the action of confirming identity access to an information system is authentication. Authentication is a critical aspect of information security that ensures that users are who they claim to be before granting them access to resources or data. This process typically involves verifying credentials, such as usernames and passwords, biometric data, or security tokens.

Authentication is essential for protecting sensitive information from unauthorized access and plays a key role in maintaining the integrity and confidentiality of data within an information system. By effectively implementing authentication measures, organizations can reduce the risk of data breaches and ensure that only authorized individuals have the ability to access specific information or perform certain actions within the system.