Westphalian vision of international relations is pregnant in the way States consider their cyber arsenal: domestic interest and sovereignty reign to insure their equality on the globe. Just to remind that balance of power proved its limits when total war arises from power confrontation. Whereas cyber weapons are disruptive due to attribution endeavor1 , their spreading potential, while they are sweet to public but harmful to targets, represent «threats to the peace» in respect to the interpretation of the first Article of the UN Charter, first paragraph, because they can be considered as an act of agression. But in many cases, conflicts in the cyber space will not reach that point of no return, because when a breach is detected, it is hard to identify its provenance…