What is the primary goal of security testing?

The primary goal of security testing is to evaluate a system's vulnerability to unauthorized access, which is accurately reflected in the selected answer. This testing method is essential for identifying weaknesses that could be exploited by malicious actors. By understanding these vulnerabilities, organizations can implement necessary measures to protect sensitive data and ensure the integrity, confidentiality, and availability of their information systems.

Security testing involves various techniques, such as penetration testing, vulnerability scanning, and security audits, all aimed at revealing potential security flaws. Once identified, these risks can be prioritized and remediated, thereby improving the overall security posture of the organization.

The other options, while important in different contexts, do not directly pertain to the core objective of security testing. For instance, enhancing system performance addresses efficiency rather than security, assessing user satisfaction pertains to user experience, and defining service level agreements is focused on service management and expectations, not directly on identifying security risks.