Which of the following involves defining the various threats, determining the extent of vulnerabilities, and devising countermeasures against a possible attack?

Qualitative risk analysis is the specific process of enumerating threats, evaluating how vulnerable an organization is to those threats, and identifying countermeasures to mitigate potential attacks - all using descriptive or ordinal scales rather than precise financial figures. It relies on expert judgment, scenarios, and relative rankings to characterize risk likelihood and impact. This distinguishes it from quantitative analysis, which assigns specific monetary values like ALE and SLE to potential losses.

Risk analysis is a broad umbrella term encompassing both qualitative and quantitative methods and does not specifically describe the threat-vulnerability-countermeasure process in the question.

Risk assessment is an overarching governance activity that includes risk analysis as a subcomponent but is not the specific analytical methodology being described.

Quantitative risk analysis assigns precise numerical monetary values to assets and losses using formulas like ALE = ARO x SLE, rather than using judgment-based threat and vulnerability characterization.