SGSI project at CNAF Andrea Chierici, Donato de Girolamo, Guido Guizzunti, Stefano Longo, Gaetano Maron, Barbara Martelli, Cristina Vistoli, Stefano Zani, Gastone Castellani and Enrico Giampieri EPJ Web Conf., 214 (2019) 08017 Published online: 17 September 2019 DOI: 10.1051/epjconf/201921408017