[brabel]

The original commenter said well that it's important that the population actually believes the system is secure (separately from it being objectively secure or not). But in Brazil, people widely believe the system to be better than paper ballots. As the other commenter said, fraud was really common with paper ballots in Brazil in the 80's and early 90's, people had little faith in them (and as a Brazilian, I find it quite funny that it's the other way around in other countries: for some reason they do believe paper is safer without really explaining how).

People may not understand the mathematics or the encryption, but they do understand that you can't just change votes in that electronic machine unless you have high level of skills (as opposed to being able to make paper ballots disappear). To successfully attack the system, you need to be able to infiltrate the machine in such a way that you cannot be found out later (if it's found a machine was tempered with, there's ways to either invalidate some votes or recover the original if possible), and because all machines are completely independent, you would need to attack, physically, one by one. There are hundreds of thousands of machines, I believe... it's just not feasible to do that without making it obvious. So no, you can't just attack the entire system.