Someone explain to me how voting machines can be hacked

[Erich Maria Remarque]

If they aren't on the network, they can't. But there is something called the dark net which allows you to hack into places that you can't normally access and then you can use db injection to run queries to change the data. Basically, there are browsers available to sneak into machines that aren't explicitly connected and then you can change the code once you find a place you can.

Lol what?