A cyber portfolio is a way to model the state of your security based on the investments youre making. This is analogous to how your financial portfolio is a model of your financial investments. This new type of model is a different way to approach security leadership. Its a set of concrete, complete, and a good portfolio view can help us understand risk, or how well they help us. We in security are hyper-focused on failures because it’s hard to measure what was blocked, and lots of things in the minds of our peers.”]
Source: https://www.darkreading.com/analytics/security-portfolios-a-different-approach-to-leadership