Academic duties

Chairing duties

• Ethical Research Board for Informatics (ERBi) of the Open University - founder (2017) and chair.
• OUrsi, the Open University Research Seminar Informatica - founder (2015) and chair.
• 1st ICFEM Workshop on Default Privacy (2014) - program chair.
• Voting in A(u)ction workshop (2013) - main organiser and general chair.
• SecVote summer school on secure voting - co-founder and main chair in 2010, 2012.
• e-Voting PhD workshop 2012 - general chair.
• Where's my vote seminar (2009) - main organiser.
• Second international conference on e-voting and identity (VoteId'09) - general chair.
• WISSec 2007 International Workshop - local organisation chair.

Public outreach

• (podcast) "Over denken: Help we zijn gehackt!", Open Universiteit, appeared online 6 January 2022.
• (online) Interviewed expert for "Van fossielen tot Facebook: álles is data", Nemo Kennislink, appeared online 8 October 2021.
• (online) Interviewed expert for "Waarom privacy zo belangrijk is bij de nieuwe corona-app", Nemo Kennislink, appeared online 8 July 2020.
• (radio) "De Stemming - hoe beveilig je je tegen computerhackers?", invited expert to a discussion of the ransomware hack of Maastricht University, L1 radio, 12 January 2020.
• (live) "De democratie van de toekomst: hoe stemmen we in 2030", panel discussion during the CyberDemocracy event at Museum for Communication, The Hague, 5 February 2019.
• (live) "Hoe veilig ben je op het web?", invited public lecture at the Studycentre Eindhoven of the Open University, 8 June 2017.
• (radio) "Fear of Russian hacking pushes Netherlands to paper election ballots", NPR affiliate WBEZ Chicago, aired on 15 March 2017.
• (online) "How come there's no digital voting in the Netherlands?", author. Article appeared on tech news site Soylentnews.org on 15 March 2017.
• (online) Interviewed expert for "Waarom stemmen we nog met potlood en papier?", Nemo Kennislink, appeared online on 8 March 2017.
• (live) panel member of the panel Obscured by algorithms: how to prove "yes" if the computer says "no" at the Computers, Privacy & Data Protection (CPDP2016) conference.
• (online) "Developing a GIMP deblug plugin", author. Article appeared on tech news site Soylentnews.org on 24 September 2016.

Memberships & invited reviews

• Project reviews:
  • EU H2020
  • Nanyang Technological University (Singapore)
  • Agence National de la Recherche (France)
• PhD defenses, member of opposition:
  • Christof Ferreira Torres (UL & TU Münich, 2022)
  • Jens Haag (OU, 2018)
  • Sven Kiljan (OU, 2017)
• Various PC memberships
• Various invited reviews
• Memberships:
  • Scientific Integrity Board (OU, since 2017)
  • Committee for Appeal of Exams (OU, since 2017)
  • Ethical Review Board Informatica (OU-CS, founder and chair, since 2016)
  • CERT-OU: Computer Emergency Response Team (OU, since 2017)
  • e-Voting PhD workshop (2011): applications reviewing committee
  • Trust in Digital Life consortium: member (2009-2013), working group chair (2010-2012)