Concours du meilleur costume @ Hackfest: 500$ à gagner Prix à la cérémonie de clôture! Info sur le site: https://hackfest.ca/halloween/?utm_source=twitter&utm_medium=socmed&utm_campaign=halloween Contest of the best Halloween costume @ Hackfest: 500$ to win Winner announced at closing ceremony) ! Info on the website: https://hackfest.ca/en/halloween/?utm_source=twitter&utm_medium=socmed&utm_campaign=halloweenEN