Securing Network Infrastructure

Calculating ROIs

Designing and implementing security controls is often seen as a cost overhead. Justifying the cost and effort of implementing certain security controls to management can often be challenging. This is when one can think of estimating the return-on-investment for a vulnerability management program. This can be quite subjective and based on both qualitative and quantitative analysis.

While the return-on-investment calculation can get complicated depending on the complexity of the environment, let's get started with a simple formula and example:

Return-on-investment (ROI) = (Gain from Investment – Cost of Investment)    * 100/ Cost of Investment

For a simplified understanding, let's consider there are 10 systems within an organization ...