Final answer:
Systrace is a computer security utility in NetBSD that enforces access policies on system calls to limit applications' access to the system.
Step-by-step explanation:
The computer security utility referred to in the question is designed to control the access that applications have to the operating system's resources, with the goal of preventing unauthorized or potentially harmful interactions. This is achieved by enforcing specific access policies when applications make system calls. The security utility in question is likely an application like systrace, which is used in operating systems such as NetBSD. Systrace monitors and controls how applications interact with the system by intercepting system calls and applying predefined policies, which dictate whether an application is allowed to perform certain operations. These policies can be set up manually by administrators or automatically learned by observing the normal behavior of trusted applications.