I said this in another comment, but an easy way to measure the efficacy is to look at the economy surrounding the zero day markets. Long story short, over the y

I said this in another comment, but an easy way to measure the efficacy is to look at the economy surrounding the zero day markets. Long story short, over the years it has become increasingly more expensive to both produce/supply and acquire exploits. This is attributable to the increasing mitigations and countermeasures, which include the ones in this document.