Which CIA principle does this security control support?

Confidentiality refers to measures that protect information from being accessed by unauthorized individuals. While important, this principle focuses on safeguarding data from exposure rather than ensuring its accuracy. Security controls that primarily support confidentiality do not necessarily address whether the data remains intact and unmodified.

Availability pertains to ensuring that data and resources are accessible to authorized users when needed. While crucial for operational efficiency, it does not encompass the accuracy or authenticity of the data itself. Availability controls focus on uptime and access rather than the integrity of the information being accessed.

Authentication involves verifying the identity of users or systems before granting access to resources. Although it is essential for establishing who can access information, it does not inherently address whether the information itself has been altered or remains trustworthy. Controls supporting authentication do not directly ensure data integrity.