  Recent years have shown us the importance of cybersecurity. Especially, when
the matter is national security, it is even more essential and crucial.
Increasing cyber attacks, especially between countries in governmental level,
created a new term cyber warfare. Creating some rules and regulations for this
kind of war is necessary therefore international justice systems are working on
it continuously. In this paper, we mentioned fundamental terms of
cybersecurity, cyber capabilities of some countries, some important cyber
attacks in near past, and finally, globally applied cyber warfare law for this
attacks.
