Giovanni Giacalone is a senior analyst in Islamist extremism and terrorism at the Italian Team for Security, Terroristic Issues and Managing Emergencies-Catholic University of Milan, at the Europe desk for the UK-based think tank Islamic Theology of Counter-Terrorism, and a researcher for Centro Studi Machiavelli. Since 2021 he is the coordinator for the "Latin America group" at the International Institute for the Study of Security-ITSS. In 2023 Giacalone published the book “The Tablighi Jamaat in Europe”.