I saw a report yesterday that only Maricopa County used Dominion. The other counties used another software (ES&S or some name like that)..
Seeing that ES&S is just as susceptible to fraud as Dominion due to the fact that the local networked machines for each site can be connected to the internet AND the make up of the variety of software services involved and underlying configurations are very similar... it would be prudent to look at ES&S as well.