What does a Misuse Case identify in system design?

A Misuse Case is specifically designed to identify potential threats that may arise from malicious actors interacting with a system. It is a tool used in threat modeling that outlines scenarios where the system might be subjected to harmful actions, helping designers to foresee how an attacker might exploit vulnerabilities.

By focusing on these malicious actions, a Misuse Case allows security professionals and developers to understand the risks associated with their systems and implement countermeasures to mitigate these threats before the system is constructed or updated. This proactive approach to security ensures that potential weaknesses are addressed as part of the overall system design process.

In contrast, other options focus on different aspects of system evaluation. Usability concerns, application strengths, or market positioning are not the primary focus of Misuse Cases; they are more related to user experience, functional capabilities, and business analysis, respectively. Thus, option B stands out as the correct choice, emphasizing its direct relevance to identifying threats and enhancing the security posture of a design.