This is still vulnerable to a DoS attack as the parent suggested. Not terribly difficult for an individual to tie up all the phone lines or overload the web vot

This is still vulnerable to a DoS attack as the parent suggested. Not terribly difficult for an individual to tie up all the phone lines or overload the web voting portal. I also agree with the parent comment re hubris about this stuff: the incentives are immensely high for someone to compromise a system like this, and it only takes a small oversight to cause a huge disaster. Everyone gets a random password? Better hope whoever is generating them used a good RNG and a proper source of entropy...