What should an IS auditor primarily focus on when determining protection levels for an information asset?

When determining protection levels for an information asset, the primary focus of an IS auditor should be the results of a risk assessment. A risk assessment provides a comprehensive evaluation of the potential threats that could exploit vulnerabilities in the asset and the impact those threats could have on the organization. It identifies the likelihood of various risks occurring and their potential consequences, enabling the auditor to determine appropriate security measures that align with the risk levels identified.

Incorporating the findings from a risk assessment allows the auditor to prioritize resources and implement security controls that effectively mitigate risks to an acceptable level. This approach ensures that the protection levels established are proportionate to the actual risks faced by the information asset, thus enhancing the organization's overall security posture and aligning security efforts with business objectives. This systematic assessment of risk is essential for making informed decisions about how much protection an asset requires and what security measures should be prioritized.