The tracker is based on a database* of jihadist attacks in Europe and North America regularly updated by Program on Extremism Director Lorenzo Vidino and fellow Francesco Marone.
*The database includes all jihadist terrorist attacks committed in North America (United States and Canada) and Europe (the 27 Member States of the European Union plus Norway, Switzerland and the United Kingdom), from the Islamic State’s proclamation of the so-called Caliphate on June 29, 2014 through November 9, 2020. For the purpose of this work, terrorism is interpreted as a deliberate act of violence against person(s), committed by one or more individuals motivated or inspired by jihadist ideology, with the intention to coerce, intimidate or convey some other message to an audience larger than the immediate victims (Lorenzo Vidino, Francesco Marone, and Eva Entenmann, Fear Thy Neighbor: Radicalization and Jihadist Attacks in the West, Report, Program on Extremism at George Washington University, June 2017). Data collection is based largely on open-source material, at times supplemented by interviews with government officials.
Released in June 2017, Fear Thy Neighbor: Radicalization and Jihadist Attacks in the West examines all Islamic State (IS)-motivated terrorist attacks carried out in Europe and North America since the declaration of the Caliphate by the group in June 2014. By analyzing the 51 attacks and their perpetrators, this study constitutes the first comprehensive account of attacks carried out during the past three years.
"[This report is] a great help for all those involved in counterterror work, those dealing with radicalization in communities, those tracing and detecting terrorism threats on the front line, and those working on the laws and policies that can help ensure we cut the terror threat still further." -Julian King, European Commissioner for the Security Union
"Fear Thy Neighbor is an invaluable resource that will be of great use to scholars, students, government agencies, non-governmental and community organizations, and the media. It presents a sober and compelling depiction of this threat and the measures needed to counter it." -Professor Bruce Hoffman, Georgetown University and author of Inside Terrorism