Certificate of Cloud Security Knowledge (CCSK) Practice Test 2025 - Free CCSK Practice Questions and Study Guide

The zero-trust security model is centered around the principle of "never trust, always verify." This means that no user or device, whether inside or outside the organizational network, is automatically trusted. Instead, the model mandates that every user must be continually authenticated, authorized, and validated to access the organization's resources, regardless of their location. This continuous verification helps to mitigate risks associated with several factors, such as insider threats, compromised credentials, and evolving cyber threats.

In contrast to other security models:

- Relying solely on external firewalls (as suggested in one of the choices) does not adhere to the zero-trust philosophy, which encompasses a broader range of security measures.

- The traditional security paradigm that operates on the assumption that individuals within the internal network are safe directly opposes the tenets of a zero-trust model.

- Requiring periodic access reviews may improve security but does not encapsulate the essence of continuously verifying every request for access, which is fundamental to a zero-trust model.

Thus, the definition that emphasizes continuous authentication and verification of all users aligns perfectly with the core principles of the zero-trust security model.