In the future, companies can expect to be impacted by cyber-warfare just as they are currently impacted by a kinetic war. But because the threshold is lower, and cyber-reconnaissance will be conducted ahead of hostilities, the likelihood of your network being attacked by a nation-state is constant. And if you are part of the critical national infrastructure, you can be sure you are being looked at. So how do you know if your network has been breached and what can you do? Who do you call on and to what extent can the government - or anyone else - help? And what - if anything - can you do to protect yourself from state attackers?