Abstract
The more advanced digital economy and society a country has the more exposed it is to cyber threats. Consequently, countries with advanced digital economy and digital infrastructure naturally need to pay more attention to protecting cyber space. Today it is a national security issue and it can no longer be argued that cyber security is its indispensable part. Accordingly, a national cyber security strategy has to be built on national security strategy. That is the main reason for using the word “cornerstone” in the title of this study. The relation between national security and national cyber security means a specific context, which is one of the subjects of our examination in this study. Today, most countries have a cyber security strategy. However, these strategies are mostly static documents that do not or only partially can handle the dynamism that characterizes cyberspace. This paper focuses on the key issues that are needed for developing a usable cyber security strategy.