What process prevents someone from denying that she accessed a resource?

Non-repudiation is crucial in cybersecurity as it ensures that a user cannot deny their actions regarding a resource. This process involves implementing measures that guarantee a person who performs an action, such as accessing a resource, is unable to refute their involvement. This is typically achieved through various methods like logging access events, using digital signatures, and maintaining detailed records that demonstrate user activity.

By providing evidence of a user's actions, non-repudiation fosters accountability, which is essential for enforcing security policies and responding to incidents. Authentication confirms the identity of users, and authorization determines their access levels, while accounting focuses on tracking user actions. However, it is non-repudiation that specifically addresses the issue of denying an action, making it the most relevant choice in this context.