Which of the following should be the PRIMARY basis for determining the value of assets?

In the context of information security and risk management, the primary basis for determining the value of an asset is the business impact or cost incurred when the asset is compromised or unavailable. Asset valuation extends beyond mere financial acquisition or replacement costs; it must account for the asset's criticality to business operations, revenue generation, and strategic objectives. If an asset's unavailability causes significant operational downtime, regulatory fines, or reputational damage, its intrinsic value to the organization is exceptionally high, regardless of its initial purchase price. Therefore, evaluating the potential business cost of asset unavailability provides the most accurate and comprehensive measure of its true value, ensuring that security investments are prioritized appropriately based on business impact.

A. Replacement cost only accounts for the physical or software replacement expense, ignoring the potentially massive operational losses incurred during downtime.
C. Original cost minus depreciation is a strict accounting measure that fails to reflect the asset's current operational criticality or the value of the data it holds.
D. Total cost of ownership (TCO) measures the financial cost to acquire, deploy, and maintain an asset, not its intrinsic value or criticality to business operations.

1. ISACA. (2016). CISM Review Manual, 15th Edition. Chapter 2: Information Risk Management, Section 2.4 (Asset Classification and Valuation).

2. NIST Special Publication 800-30 Rev. 1. (2012). Guide for Conducting Risk Assessments. Section 2.3.1 (Asset Valuation and Impact). https://doi.org/10.6028/NIST.SP.800-30r1