Comprehensive and Detailed 250–300 Words Explanation From Exact Extract from Chief Information Security Officer (CCISO) Documents:

The EC-Council CCISO Body of Knowledge identifies negative Net Present Value (NPV) as the most common reason executives reject proposed projects. NPV measures whether the discounted future benefits exceed the initial and ongoing costs of an investment.

CCISO financial governance modules emphasize that boards prioritize investments that create or preserve value. A negative NPV indicates that a project destroys value, even if it has security benefits. While ROI timing may influence prioritization, it rarely results in outright rejection if NPV is positive.

CCISO materials stress that CISOs must frame security investments in financial terms, demonstrating long-term value creation or loss avoidance. A positive NPV indicates value, while a negative NPV signals financial inefficiency.

Therefore, a negative NPV is the most probable reason for rejection.