If the Commonwealth of Virginia is to take the mandate to protect voting integrity seriously, there is only one clear answer that reduces cyber security risk by orders of magnitude.

That solution is to follow the example of countries like Ireland, where the paper ballot is used in place of electronic voting machines.  A proper and neutral (not corporate) risk analysis will back this assertion up.  It is far more secure, more auditable, and engenders a startlingly larger increase in voter trust than any electronic apparatus.

The population of Ireland is, granted, around half that of Virginia; but if they can make it work, that belies any arguments that would claim a paper ballot for everyone would not work in Virginia.