Which control method focuses on managing the configuration of the initial setup?

The control method that focuses on managing the configuration of the initial setup is secure build. Secure build practices are designed to ensure that systems are configured securely from the very beginning. This involves establishing baseline configurations, applying best practices, and ensuring that security controls are integrated into the initial deployment process. By focusing on a secure build, organizations can minimize vulnerabilities that may arise from misconfigurations or insecure settings that could be exploited later.

The practice of a secure build encompasses the implementation of security benchmarks during the installation of software, hardening operating systems, and ensuring that applications are deployed in a secure manner. This foundational aspect of security is critical, as it sets the stage for ongoing security measures and maintenance. In contrast, the other options pertain to different facets of security management, such as updating existing systems, controlling access, or responding to incidents, but they do not specifically address the initial setup configuration as effectively as secure build does.