What is a security practice for the cloud component in IoT architecture?

What is a security practice for the cloud component in IoT architecture?

• A. Access to the cloud must be restricted.
• B. The cloud operates with open access to simplify management.
• C. All processing must occur only on mobile devices.
• D. Cloud components should bypass authentication for performance.

Answer: (A)

Restricting access to the cloud is a fundamental security practice in IoT architectures. The cloud handles important data, device management, and analytics; making it accessible broadly would dramatically widen the attack surface. By enforcing strong authentication and authorization, applying the principle of least privilege, and using secure APIs, you ensure that only legitimate devices, services, and users can reach cloud resources. This approach also supports auditing and monitoring, making it easier to detect and respond to unauthorized access. Open access compromises confidentiality and integrity and increases the risk of credential theft or device compromise. Requiring all processing to occur only on mobile devices ignores the realities of IoT, where the cloud provides scalable processing, storage, and centralized management. Bypassing authentication for performance creates a direct vulnerability that attackers can exploit.

Restricting access to the cloud is a fundamental security practice in IoT architectures. The cloud handles important data, device management, and analytics; making it accessible broadly would dramatically widen the attack surface. By enforcing strong authentication and authorization, applying the principle of least privilege, and using secure APIs, you ensure that only legitimate devices, services, and users can reach cloud resources. This approach also supports auditing and monitoring, making it easier to detect and respond to unauthorized access.

Open access compromises confidentiality and integrity and increases the risk of credential theft or device compromise. Requiring all processing to occur only on mobile devices ignores the realities of IoT, where the cloud provides scalable processing, storage, and centralized management. Bypassing authentication for performance creates a direct vulnerability that attackers can exploit.