A vulnerability is a weakness or flaw in the IT system or environment that could be exploited by a threat. A threat event is an occurrence or action that exploits a vulnerability and causes harm or damage to the IT system or environment. The lack of data to measure threat events is the most important factor, because it may affect the accuracy and reliability of the risk assessment and evaluation, and consequently, the risk response and strategy. The lack of data to measure threat events may also create challenges or risks for the organization, such as compliance, legal, reputational, or operational risks, or conflicts or inconsistencies with the organization’s risk appetite, risk objectives, or risk policies. The other options are not as important as the lack of data to measure threat events, although they may also influence the risk response and strategy. The likelihood and impact of threat events, the cost to implement the risk response, and the monetary value of the asset are all factors that could affect the feasibility and sustainability of the risk response and strategy, but they do not necessarily affect the validity and quality of the risk assessment and evaluation