W5 correspondent Peter Akman examines the cyber threat to Canadian democracy in "Dirty Tricks". The 2016 United States presidential election saw an unprecedented campaign by Russian agencies to create division and exploit differences among American voters, and now the same operatives have set their sights on Canadian voters. Akman travels to the epicenter of election hacking, St. Petersburg, Russia, and speaks with "cyber-trolls" to uncover how they do it, how vulnerable we are, and where the weaknesses lie in Canada's electoral system.