Professor of Criminal law at the University of Palermo. Senior Visiting Fellow at the Nathanson Centre on Transnational Human Rights, Crime and Security (York University, Toronto – October/December 2012); Jemolo Fellow at Nuffield College (Oxford University – June/July 2013); Senior Visiting Fellow at the Max Planck Institute for the Study of Crime, Security and Law, Freiburg i.Br. (July/September 2024). Coordinator of the Jean Monnet Center of Excellence “Europe between Mobility and Security: The Challenges of Illicit Trades in the Mediterranean Area (EUMoSIT)” (2019/2022) (P.I. Vincenzo Militello), based at the University of Palermo. Project Manager of the Jean Monnet Module on “Mobility, Security and the new media” (2015/2018) (P.I. Vincenzo Militello), based at the University of Palermo. Alessandro has extensively written, among other things, on criminal law theory and justification defences, corruption, hate speech, criminalization of migration and the relationships between fundamental rights and criminal law.