KPIs for Managing Information Security Risk

B.

The MOST useful KPI for stakeholders to assess whether information security risk is being managed is option B, "Time from identifying a security threat to implementing a solution." This KPI is a measure of the organization's ability to quickly respond to security threats and reduce their impact.

Option A, "Time from initial reporting of an incident to appropriate escalation," is also important, as it measures the speed at which the organization can respond to security incidents. However, this KPI does not necessarily provide insight into how effectively the organization is managing security risk overall.

Option C, "The number of security controls implemented," can be useful in measuring the organization's level of security control implementation, but it does not necessarily indicate how well the organization is managing security risk. It is possible for an organization to have many security controls in place, but still be vulnerable to certain types of security threats.

Option D, "The number of security incidents during the past quarter," provides insight into the frequency of security incidents, but it does not necessarily measure how well the organization is managing security risk. An organization could have a low number of incidents but still be vulnerable to significant security risks.

In summary, the KPI that provides stakeholders with the MOST useful information about whether information security risk is being managed is option B, "Time from identifying a security threat to implementing a solution." This KPI measures the organization's ability to quickly respond to security threats and reduce their impact, which is a key component of effective information security risk management.