Why has some cyber-attacks been more successful than others? There has been in the near past examples of cyber-attacks used with different purposes. How do we understand these chosen targets and what result the attack accomplished? Research has discussed similarities between aviation warfare and cyber warfare, and how the first could explain what is happening in cyber warfare now. There is also opposing opinions whether cyber warfare should be seen as a method to alone force a will on your opponent or if cyber warfare should mere be supporting other military means. The essay test Warden’s theory “The Enemy as a System” capacity to explain why the effect of cyber-attacks can differ. It will also compare the effect in different cases based on standalone and supporting cyber-attacks. The essay concludes that Warden’s theory does not have any explanatory value but the difference in effective and ineffective cases is whether the cyber-attack was supporting other military means or a standalone attack.