ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
While creating a security test plan for a new online banking portal, the team schedules an exercise that saturates the login service with tens of thousands of concurrent requests to observe CPU utilization and response-time degradation. Which category of security testing does this exercise best represent?
Static application security testing of the login module's source code
Functional security testing of authentication logic
Misuse and abuse case testing for credential brute-force attacks
Nonfunctional security testing that assesses performance under load
Nonfunctional security testing focuses on qualities such as performance, reliability, and scalability rather than on specific security features. Load or stress-based tests that measure how security controls behave under heavy traffic examine these broader characteristics, so they are nonfunctional. Functional security tests would verify that the authentication logic correctly accepts or rejects credentials, static application security testing inspects source code without executing it, and misuse/abuse case testing targets specific attack scenarios rather than systemic performance behavior.
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Testing
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