Identify a method of budgeting and differentiate its merits and deficiencies. Discuss how you would defend your security department’s budget to upper management. 

One method of budgeting that can be used is the Zero-Based Budgeting (ZBB) approach. This involves creating a budget from scratch each year as opposed to only making modifications to an existing one. This allows for greater flexibility in allocating resources and ensures that spending decisions are based on current business requirements rather than past practices or expectations.

A key merit of this approach is its ability to help identify areas where cost savings can be made by eliminating redundant or unnecessary activities while still maintaining optimal performance. Additionally, it encourages managers to think creatively when it comes to finding new ways of doing things which could potentially lead to improved efficiency levels within the organization.

On the other hand however, ZBB requires significant time and effort as well meticulous planning in order for it to be successful which may not always be feasible for some companies. Furthermore, there is often a lack of clarity regarding how budgets should be evaluated or approved which makes it difficult for management teams to hold team members accountable if targets are not met.

To defend my security department’s budget I would start by presenting clear evidence demonstrating the value that our services provide for the company such as improved compliance with regulations; reduced risk of cyber attacks; and protection against potential fraud amongst others. Additionally, I would also highlight how investing in better security measures now could save money further down the line due to decreased costs related to dealing with data breaches or costly lawsuits etc. Ultimately, these factors would make it easier for upper management understand why our security department needs adequate funding in order ensure optimal outcomes going forward.