The Department of Homeland Security has officially classified election systems as critical infrastructure in order to keep them safe from tampering. Election infrastructure includes storage facilities, polling places, voter registration databases, voting machines and other systems that help manage the election process and report and display its results. DHS' announcement came after US intelligenceconfirmed that Russia influenced the presidential elections, mostly by hacking into the country's computers. If you'll recall, cyberattackers infiltrated not just the Democratic National Committee's machines, but also over 20 states'election systems. However, none of the machines that were compromised were used for vote tallying.