Computer scientist shows how to tamper with Georgia voting machine, in election security trial: “All it takes is five seconds and a Bic pen.”::An expert witness for plaintiffs seeking to bar Georgia’s touchscreen voting machines showed a crowded courtroom how he could tamper with election res
Not all states are fully electronic. Many districts (including mine) are run on paper ballots that are then scanned.
I would be more concerned about the upstream tabulation systems. The possibility of making bulk changes is much more harmful than tampering with single voting machines.
There was a mad dash to electronic voting after the Bush v Gore hanging chad fiasco. A lot of people are still focusing on the voting machines vs. the integrity of centralized tabulation systems.