EN
The paper deals with the legal definition of attack under international humanitarian law, analysed in the context of cyber “attacks”. The armed nature of cyber operation is distinguished from a violent one and therefore special section is devoted to the indirect consequences of cyber attacks. It is also noted that the incremental resort to automated weapon systems, controlled by computer networks still highly vulnerable to hostile malware and interference, challenges the current state of law. Finally, the author attempts to render the linkage between law and IT, both greatly concerned with cyber security.