Unless it was considered worth the effort to try and see if they could just jeopardize the system financially. For example, nation states have the capability to

Unless it was considered worth the effort to try and see if they could just jeopardize the system financially. For example, nation states have the capability to compromize industrial operations with specific viruses. If a uranium enrichment centrifuge can be targeted I don't think any system can be guaranteed to be infection free.