No it hasn't. Paper works great. So great in fact, many security experts recommend returning to a paper backup system (1). The reason we don't have a secure election process is because no one with the power to do anything has any incentive to fix it (a bit of an over-generalization).
Washington state has an excellent system where all ballots are on paper and are mailed in. It's not perfect, there was a gubernatorial election where they kept "recounting" and "finding" more ballots until the correct person won, but it's a lot harder to corrupt than those hackable electronic machines.
(1) https://www.cnn.com/2018/11/05/opinions/to-keep-our-votes-sa...