Secret report finds flaw in Georgia voting system, but state in the dark

I was reading an article that was about a Stacy Abrams campaign official stating votes during the 2018 election for Abrams were changed. Looking for more information I ran across the above article. It would be interesting to know for sure how vulnerable Georgia voting Machines are to hacking and what safe guards are in place. Other states with Dominion voting machines also have concerns. It would be great if the air could be cleared.