What does Threat Event Frequency (TEF) measure?

Threat Event Frequency (TEF) specifically measures how often threat actions occur against assets within a given time frame. It provides an understanding of the likelihood of various threat events manifested against an organization's assets, which is crucial for risk assessment. By quantifying the frequency of these events, organizations can better prepare and implement strategies to mitigate potential risks. This measurement can also inform decisions about resource allocation for security measures based on the prevalence of threats.

The other options do not accurately capture the essence of TEF. For instance, total monetary loss relates to the impact or consequence of threats but does not measure their frequency. Average duration pertains to how long a threat lasts rather than how frequently it occurs, while types of threats describe the nature of potential incidents without addressing their occurrence rates.