Daan Weggemans
Assistant professor
- Name
- Dr. D.J. Weggemans
- Telephone
- +31 70 800 9375
- d.j.weggemans@fgga.leidenuniv.nl
- ORCID iD
- 0000-0003-3039-5579
Daan Weggemans is an Assistant Professor and researcher at the Institute for Security and Global Affairs (ISGA). His research focuses on contemporary security issues, with a specific emphasis on digital security. Additionally, he is a board member of the bachelor's programme in Cybersecurity & Cybercrime.
More information about Daan Weggemans
News
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Podcast series: Dive into the world of cybersecurity & cybercrime -
FGGA experts on freedom: 'We are only truly free when everyone feels free' -
Collaborating against ransomware: Insights from the Melissa Project -
Students Security Studies challenged by real-life security problems -
GPS blunders and security risks: why do we blindly follow technology? -
FGGA's Cyberweek: education in cybersecurity and digitalisation -
Leiden University introduces the first bachelor's programme in Cybersecurity & Cybercrime -
Parenting choices and parenting styles important in transmission of extremist views within families -
Security Studies and Liberal Arts and Sciences (LUC) awarded bronze medal EW Best Studies 2023 -
Five new Teaching Fellows appointed -
Hanne Cuyckens and Daan Weggemans appointed Teaching Fellow -
Call for Applications: PhD Supervision Excellence Training for Academic Staff -
Life after Security Studies: five students share their thoughts about the programme -
Graduation Security Studies: ‘Stay curious’ -
Call for Applications: PhD Supervision Excellence Training for Academic Staff
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Very successful conference marks end of Integrated Project for students Security Studies -
Call for Applications: Teaching Excellence Training for Academic Staff
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A study on the transmission of extremism within a family context -
Podcast series introduces you to the BSc Security Studies -
Alumni event: from peacekeeping to making connections for the future -
26 Research and Education Grants in 2020 for the Institute of Security and Global Affairs -
Grant to lead European Network on Teaching Excellence -
Graduation of the first class of BSc Security Studies -
Research grant awarded to Daan Weggemans, Katharina Krüsselmann, Tessa Ubels and Marieke Liem -
Scholarship 'Integrated Learning' for Daan Weggemans -
Successful first webinar BSc Security Studies -
4 questions for Daan Weggemans, new programme director for bachelor Security Studies -
Grammar school pupils visit Wijnhaven -
Daan Weggemans’ view on the deradicalization policy of municipalities -
Ministry of Security and Justice publishes results ISGA conference -
Government Roundtable Discussion on the issue of Radicalization
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Foreign Fighters on Social Media: An analysis of 11 Facebook accounts
Research output
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‘Tell them if they race-mix, they will rot in hell’: right-wing extremists’ narratives on children’s ideological socialisation -
Computer says no - Understanding Digital Authority -
The intergenerational transmission of an extreme belief systems: Theoretical exploration of a new field of study -
Too Close for Comfort: Cyber Terrorism and Information Security across National Policies and International Diplomacy -
A family affair? Exploratory insights into the role of family members of those who joined jihadist groups
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A country of immigrants no more? The securitization of immigration in the National Security Strategies of the United States of America
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Countering cyber terrorism in a time of 'war on words': Kryptonite for the protection of digital rights? -
Politie & wetenschap -
De leefwereld en denkbeelden van Nederlandse & Belgische syriegangers: een analyse van elf facebook-accounts -
Who Are They and Why Do They Go? The Radicalization and Preparatory Processes of Dutch Jihadist Foreign Fighters
Leiden Safety and Security Blog
Daan Weggemans is an Assistant Professor and researcher at the Institute for Security and Global Affairs (ISGA). His research focuses on contemporary security issues, with a specific emphasis on digital security. He has previously published on extremism and terrorism, including the (legal) case of Anders Behring Breivik and the de-radicalisation and reintegration of extremists. Additionally, he is a board member of the bachelor's programme in Cybersecurity & Cybercrime.
Assistant professor
- Faculty of Governance and Global Affairs
- Institute of Security and Global Affairs
- Weggemans D.J. (13 February 2025), Computer says no: understanding digital authority (Dissertatie. Institute of Security and Global Affairs (ISGA), Faculty of Governance and Global Affairs, Leiden University). Supervisor(s): Berg B. van den & Eijkman Q.A.M.
- Wieringen L. van, Weggemans D.J. & Liem M.C.A. (2025), ‘Tell them if they race-mix, they will rot in hell’: Right-wing extremists’ narratives on children’s ideological socialization, Behavioral Sciences of Terrorism and Political Aggression : 1-17.
- van Wieringen Layla Krüsselmann Katharina Weggemans Daan Liem Marieke (2025), Inheriting Hatred? A Systematic Review of the Intergenerational Transmission of Extremist Ideologies, Journal of Child and Family Studies : .
- Berg B. van den, Weggemans D.J. & Nobbenhuis M.R. (2024), Samenwerken tegen ransomware: evaluatie Melissa. Den Haag: Universiteit Leiden.
- Wieringen L. van, Weggemans D.J. & Liem M.C.A. (2024), De intergenerationele overdracht van extremisme: een empirisch onderzoek naar de overdracht van rechts-extremistische en jihadistische denkbeelden binnen de gezinscontext [The intergenerational transmission of extremism: an empirical study on the transmission of right-wing extremism and jihadism within the family context]. Den Haag: Nationaal Coördinator Terrorismebestrijding en Veiligheid (NCTV).
- Krüsselmann K. & Weggemans D. (2023), Radicalization and Left-Wing Extremism. In: Zúquete J.P. (Ed.), The Palgrave Handbook of left-wing extremism: Palgrave Macmillan.
- Grol Peter & Weggemans D.J. (2022), Antidemocratische bewegingen in de Nederlandse democratie: een blik op Hizb ut-Tahrir, Tijdschrift voor Religie, Recht en Beleid 13: 6-20.
- Wieringen L. van, Weggemans D.J. & Liem M.C.A. (2022), De intergenerationele overdracht van extreme gedachtensystemen: theoretische verkenning van een nieuw onderzoeksdomein, Mens en Maatschappij 97: 437-451.
- Colomé-Menéndez D., Koops J.A. & Weggemans D. (2021), A country of immigrants no more? The securitization of immigration in the National Security Strategies of the United States of America, Global Affairs : .
- Broeders D., Cristiano F. & Weggemans D. (2021), Too close for comfort: cyber terrorism and information security across national policies and international diplomacy, Studies in Conflict and Terrorism : 1-28.
- Wieringen L. van, Krüsselmann K., Weggemans D.J. & Liem M.C.A. (2021), Van ouder op kind: een verkennende studie naar de intergenerationele overdracht van jihadistisch gedachtegoed binnen de gezinscontext (. Institute of Security and Global Affairs (ISGA), Faculty of Governance and Global Affairs (FGGA), Leiden University), . Den Haag: Wetenschappelijk Onderzoeks- en Documentatiecentrum (WODC).
- Weggemans D., Liem M.C.A. & Zwan M. van der (2021), A family affair? : Exploratory insights into the role of family members of those who joined jihadist groups, Security Journal 35: 849-862.
- Cristiano F., Broeders D. & Weggemans D. (2020), Countering cyber terrorism in a time of ‘war on words’: Kryptonite for the protection of digital rights? . The Hague: The Hague Program for Cyber Norms.
- Cristiano F., Broeders D.W.J. & Weggemans D.J. (2020), Introduction: cyber terrorism and human rights from the international to the national, and back?. In: Cristiano F., Broeders D.W.J. & Weggemans D.J. (Eds.), Countering cyber terrorism in a time of ‘war on words’: Kryptonite for the protection of digital rights?. The Hague: The Hague Program for Cyber Norms. 1-5.
- Grol P. & Weggemans D.J. (2020), Eigen koers richting kalifaat, een beeld van Hizb ut-Tahrir in Nederland, Tijdschrift voor Religie, Recht en Beleid 11: 25-40.
- Heide L. van der, Weggemans D. & Schuurman B. (2018), Deradicalisering, uittreding en re-integratie. In: Bakker E., Muller E.R., Rosenthal U. & Wijk R. de (Eds.), Terrorisme: studies over terrorisme en terrorismebestrijding 419-438.
- Weggemans D.J., Zwan M.M.A. van der & Liem M.C.A. (2018), Families van Uitreizigers : Een onderzoek naar de rol van familieleden bij processen van uitreizen naar en terugkeren uit buitenlandse jihadistische strijdgroepen. Journal of Security and Global Affairs: WODC.
- Weggemans D., Zwan M. van der & Liem M. (30 July 2018), Syriëgangers lieten hun families meestal in verbijstering achter. Trouw.
- Leeuwen L. van & Weggemans D.J. (2018), Characteristics of Jihadist Terrorist Leaders: A Quantitative Approach, Perspectives on Terrorism 12(4): 55-67.
- De Graaf B.A. & Weggemans D.J. (2018), Quickscan Amsterdamse Aanpak Radicalisering en Terrorisme (Gemeente Amsterdam). [other].
- Rijt J. van de & Weggemans D.J. (2017), Terrorisme-gedetineerden: over scheiding, spreiding en reintegratie, Sancties 2017(4): 204-215.
- Weggemans D.J. & Graaf B.A. de (2017), Reintegrating Jihadist Extremist Detainees: Helping Extremist Offenders Back into Society. London: Routledge.
- Liem M.C.A. & Weggemans D. (2016), Op Vrije Voeten: Een exploratieve studie naar de rol van publieke aandacht in de re-integratie van ex-gedetineerden. Den Haag: Universiteit Leiden Campus Den Haag.
- Bjorgo T., Graaf B.A. de, Heide E.J. van der, Hemmingby C. & Weggemans D.J. (2016), Performing Justice, Coping with Trauma: The Trial of Anders Breivik, 2012. In: Graaf B.A. de & Schmid A. (Eds.), Terrorists on Trial: A Performative Perspective. Leiden: Leiden University Press. 334-367.
- Weggemans D., Peters R., Bakker E. & Bont R. de (2016), Bestemming Syrië: een exploratieve studie naar de leefsituatie van Nederlandse ‘uitreizigers’ in Syrië: Universiteit Leiden & Universiteit van Amsterdam.
- Weggemans D., Peters R., Bakker E. & Bont R. de (2016), Destination Syria: An Exploratory Study into the Daily Lives of Dutch 'Syria Travellers'. Journal of Security and Global Affairs. The Hague: ISGA.
- Entenmann E.C., Heide E.J. van der, Weggemans D.J. & Dorsey J. (2016), Rehabilitation for Foreign Fighters? Relevance, Challenges and Opportunities for the Criminal Justice Sector, International Centre for Counter-Terrorism Policy Brief 6(5): 1-28.
- De Graaf B. & Weggemans D. (2016), Na de vrijlating: Observaties en dilemma's in de omgang met (voormalige) terrorisme-gedetineerden, Justitiële Verkenningen 42(2): 78-98.
- Bont R. de, Weggemans D.J. & Bakker E. (11 April 2016), Daily Life in Syria. Leiden Safety and Security Blog. Den Haag: ISGA. [blog entry].
- Elbers J.M., Weggemans D.J. & Liem M.C.A. (2016), Op Vrije Voeten: Herintreding van Maatschappelijk Gevoelige Ex-Gedetineerden.
- Weggemans D.J. & Graaf B.A. de (2015), Na de vrijlating: Een exploratieve studie naar recidive en re-integratie van jihadistische ex-gedetineerden. Amsterdam: Reed Business.
- Entenmann E., Heide E.J. van der, Weggemans D.J. & Dorsey J. (2015), Rehabilitation for Foreign Fighters? Relevance, Challenges and Opportunities for the Criminal Justice Sector, 6(5): .
- Weggemans D., Bakker E. & Grol P. (2014), Who are they and Why do they go? The Radicalization and Preparatory Processes of Dutch Jihadist Foreign Fighters, 8(4): 100-111.
- Grol P., Weggemans D. & Bakker E. (2014), De leefwereld en denkbeelden van Nederlandse & Belgische Syriëgangers: een analyse van elf Facebook-accounts, Internationale Spectator (68) 12: 14-19.
- Grol P., Weggemans D. & Bakker E. (2014), De leefwereld en denkbeelden van Nederlandse en Belgische Syriëgangers, Internationale Spectator 68(12): 14-19.
- Weggemans D.J. (2014), Re-integratie van extremismeverdachten, Agriculturae Conspectus Scientificus (ACS) 24(1): 8-13.
- Weggemans D., Bakker E. & Grol P. (2014), Who Are They and Why Do They Go? The Radicalization and Preparatory Processes of Dutch Jihadist Foreign Fighters, 8(4): 100-110.
- Heide E.J. van der & Weggemans D.J. (2013), Dealing with Extremism - Trials and Errors. EENET Annual Conference 25 September 2013 - 27 September 2013.
- Weggemans D.J. & Graaf B.A. de (2013), Re-integratie en recidive van extremisme-verdachten in de politiepraktijk. [other].
- Weggemans D.J. (25 June 2013), Ik heb niets te verbergen is geen sterk argument. Trouw, Opinie: 18.
- Weggemans D.J. (2013), Radicalisme: hét fundament voor geweld?, 2013(4): 14-23.
- Eijkman Q.A.M. & Weggemans D.J. (2013), Open source intelligence and privacy dilemmas: Is it time to reassess state accountability?, Security and Human Rights 23(4): 285-296.
- Graaf B.A. de, Heide E.J. van der, Wanmaker S. & Weggemans D.J. (2013), The Anders Behring Breivik Trial: Performing Justice, Defending Democracy, ICCT Perspective : .
- Weggemans D.J. & Boeke S. 10 April 2013, ’Destination Jihad: Why Syria and not Mali [podcast].
- Weggemans D. (2013), Radicalisme: hét fundament voor geweld?, Volonté Générale (3): 14-23.
- Eijkman Q.A.M. & Weggemans D.J. (2012), Visual Surveillance and the Prevention of Terrorism: What about the checks and balances?. In: Fenwick H. (Ed.), Developments in Counter-terrorist Measures and the Uses of Techology. Abingdon, United Kingdom: Routledge.
- Weggemans D.J. & Eijkman Q.A.M. (2012), Security, the Exchange of Information and Privacy: Is it time to reassess state accountability? (Amsterdam Privacy Conference). [other].
- Weggemans D.J. (2012), Privacy is ook voor jongeren belangrijk, Trouw : .
- Graaf B.A. de, Heide E.J. van der, Weggemans D.J. & Wanmaker S. (2012), Terrorists on Trial. The Breivik case - Live Blog. [other].
- Heide E.J. van der, Graaf B.A. de, Weggemans D.J. & Wanmaker S. (2012), The 22nd of July trial reaches its final stage, International Centre for Counter-Terrorism : .
- Weggemans D.J. (2012), Crisis and Security Management, Magazine Nationale Veiligheid en Crisisbeheersing 10: .
- Eijkman Q.A.M. & Weggemans D.J. (2011), Visual Surveillance and the Prevention of Terrorism: What about the checks and balances?, Developments in CounterTerrorist Measures and Uses of Technology. .
- Weggemans D.J. (2011), Inburgering hier jaagt Arabische lente aan, Trouw : .
- Weggemans D.J. (2011), Gevoel van veiligheid heeft een hoge prijs, Trouw : .