What two risk factors are used to calculate Loss Event Frequency (LEF)?

Loss Event Frequency (LEF) is a critical component in risk analysis, particularly within the context of the Open FAIR framework. The correct answer, which highlights Threat Event Frequency and Vulnerability, provides a foundational understanding of how LEF is determined.

Threat Event Frequency refers to the likelihood of a particular threat occurring that could exploit vulnerabilities within an organization. This is rooted in the understanding that certain threats are more prevalent in specific environments or industries, making it essential to assess how often these threats can emerge.

Vulnerability, on the other hand, pertains to the weaknesses within an organization's systems, processes, or practices that can be exploited by the identified threats. The combination of these two risk factors essentially captures the probability of loss events occurring – that is, how often a cyber event could result in a loss.

By multiplying Threat Event Frequency with the corresponding Vulnerability, analysts can estimate how frequently loss events are likely to happen. This allows organizations to prioritize risk management efforts effectively and allocate resources where they are most needed.

Other options do not accurately reflect the parameters used in calculating LEF. For instance, while Incident Rate and Susceptibility may seem relevant, they do not specifically align with the rigorous definitions required in the Open FAIR framework. Similarly, Risk Probability and