Gunnar Peterson and security budget

This post from Gunnar Peterson about security budgets is extremely interesting. The comparison that he suggests between security budgets and IT budgets is a very good way to detect misconceptions about security needs and alignment between the IT strategy and the security strategy.However, it's important to mention that some network solutions can solve problems that have their root cause in other layers. It's also important to perform the comparison in a time line perspective, as you may need to invest more in a specific layer now to address a gap created by past IT investments in that layer without the related security budget.