Which security principle is being applied?

Separation of privilege involves dividing access rights among different users or processes to minimize the risk of unauthorized actions. While this principle enhances security, it does not encompass the ongoing verification aspect central to zero trust, which is focused on continuous assessment rather than predefined access levels.

Psychological acceptability refers to the user-friendliness and ease of use of security measures. This principle prioritizes user experience, ensuring that security protocols do not hinder productivity. However, it does not directly address the fundamental security approach of verifying trust for every access request, as seen in zero trust.

Least privilege is the practice of granting users the minimum level of access necessary to perform their tasks, reducing the risk of misuse. Although this principle enhances security by limiting access, it operates under the assumption that users and devices are trustworthy once authenticated, which contrasts with the zero trust approach.