Is cyber a new war zone? Nation states account for a growing percentage of cyber attacks. And some experts warn that state-sanctioned hacking could spill over into an all-out cyber conflict, or worse still, outright war.

But is that overstating the risk? Will state actors hold back from attacks on sectors such as energy, or healthcare? Will they stop short of causing civil unrest, or is that their goal?

Cyber is now firmly part of the "grey zone" between peace and war, where norms and behaviours are only now starting to emerge.

What steps should governments, international bodies, and the cybersecurity industry itself take to stop an accidental cyber attack becoming an international incident?

Security Insights' Stephen Pritchard discusses this, and more, with Nominet Cyber's MD, David Carroll.