Oregon has one of the better balloting systems. We vote with paper ballots and no part of the process is connected to the internet. The Secretary of State has produced some educational videos on the balloting process.
Oregon’s election system is very strong with training personnel matching every voter signature on every ballot. If your signature doesn’t match, you are notified and given an opportunity to verify their signature. Counting machines go through a testing protocol before and after each election. After ballots are counted by the machines, a random batch is manually counted to confirm the machine count.
The ballots are scanned for bar code and signatures for comparison. Signatures are verified and then the ballots are removed from the envelopes. Ballots are put through the tally machines and then stored for 22 months.