How you know you can trust Brazil’s electronic voting system

How you know you can trust Brazil's electronic voting system
The electronic voting system is under attack

Jair Bolsonaro, the frontrunner of Brazil’s presidential race, has cast doubt over the integrity of Brazil’s electronic voting system. And he’s not the first to do so. Since its implementation two decades ago, Brazil’s electronic voting system has been the subject of much debate about its possible vulnerability to hacker attacks, as well as a perceived lack of transparency in the counting of ballots.

In 2014, the presidential race was decided by the narrowest margin ever recorded, with 51.64 percent of voters going to Workers’ Party candidate Dilma Rousseff against 48.36 percent to Aécio Neves,...

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