Cyber business interruption coverage may likely be the most significant coverage component. At the same time, there is still lots of grey area with regard to the underlying risks scenarios, especially as wordings are already broadening to cover, for example, preventive shutdowns.
The article linked below provides good insights into the relevant factors and discussions. The lesson is clear: carefully draft your wordings so that insurers and insured are aware of what is covered and what is not.
“In business interruption, we do see some gray areas on policies,” said panelist Catherine Rudow, senior vice president of North America Property and Casualty and senior underwriter of Casualty at PartnerRe. “I wonder if as claims start coming in, we’ll start to see the insurance industry figure out where in fact these losses do belong.”
https://www.insurancejournal.com/news/national/2018/06/12/491842.htm