He received the Ph.D degree in Computer Science from the Università degli Studi di Milano in February 2008. He is the winner of the ERCIM STM WG 2009 award for the best PhD thesis on security and trust management in an European University. His research interests are in the area of information security and privacy in distributed and mobile networks, with particular consideration of cloud and SOA security, mobile network privacy and anonymity, and access control models and languages. Within the above areas, he has published more than 100 contributions in international journals, conference/workshop proceedings, and chapters in international books.