The CSA key lecturers are scholars and lecturers of Leiden University, Delft University of Technology and The Hague University of Applied Sciences. Next to them, guest lecturers from private and public organisations contribute to the development and implementation of the learning tracks .

Jan van den Berg
Jan van den Berg
Core lecturer
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Professor Dr Jan van den Berg, M.Sc., is Professor of Cyber Security at Delft University of Technology, faculties Technology, Policy & Management and Electrical Engineering, Mathematics & Computer Science, also at University Leiden, Faculty Campus The Hague. Van den Berg is the academic director of the Cyber Security Academy and the Programme Director of the Leiden master's programme Cyber Security.

After graduating as a mathematical engineer from Delft University of Technology in 1977, Van den Berg worked at several institutes of higher education until 1989. From 1989 onwards he was affiliated with the Erasmus University Rotterdam where he conducted research in the field of Computational Intelligence and its (economic) applications. After obtaining his PhD in 1996, is research broadened to include the development and application of (intelligent) methods of data analysis, knowledge discovery, and information security. In 2006 Van den Berg returned to the TU Delft where he continued his work on Data Analytics supplemented with research in the field of Cyber Security.

 

Watch the video of professor Jan van den Berg's inauguration speech.

Edwin Bakker
Edwin Bakker
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Professor Dr Edwin Bakker has been Director of the Centre for Terrorism & Counterterrorism at Leiden University and Professor at the Institute of Public Administration of Campus The Hague Faculty, Leiden University since 2010. Prior to this he worked at Clingendael as Head of the Security and Conflict Programme (2007 – 2010) and as Senior Research Fellow (2003 – 2007).

He also holds the position of research fellow at the International Centre for Counter Terrorism – The Hague. In addition, he is a member of the editorial board of the following (academic) journals: Security and Human Rights, the Journal of Strategic Security, Vrede & Veiligheid (Peace & Security) and Internationale Spectator. Bakker is also a guest lecturer at the NATO Defense College in Rome and member of the Netherlands Helsinki Committee.

In 1997, Bakker obtained a PhD degree with his thesis on minority conflicts in Slovakia and Hungary. His areas of expertise are Terrorism studies and crisis and security management. Bakker teaches in the MA in Crisis and Security Management at Leiden University.

Richard Griffiths
Richard Griffiths
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Professor Dr. Richard T. Griffiths is Professor of International Studies and Emeritus Professor of Economic and Social History at the Faculty of Humanities at Leiden University. His areas of expertise are Economic History, History of European Integration, Global History, scientific writing/research skills and thesis supervision (teaching) and European integration, development aid and small states (research).

Griffiths graduated summa cum laude in Economic History and Russian Studies at the University College of Swansea (1970) and obtained his PhD in history from the University of Cambridge (1977) for his thesis entitled Industrial Retardation in the Netherlands, 1830-1850. He came to Leiden University in 1995. Before this he worked at Cambridge University (researcher 1970-73), University of Manchester (Associate Professor, 1973-80), Vrije Universiteit Amsterdam (Professor of Economic History 1980-87 and European University Institute Florence (Professor of Contemporary History 1987-1995).

Simone van der Hof
Simone van der Hof
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Professor Dr Simone van der Hof LL. M.  is Professor of Law and the Information Society and head of the Centre for Law and Digital Technologies (eLaw) as well as the Advanced Master's Programme Law and Digital Technologies at the Leiden University Faculty of Law. In 2012 she was a visiting professor at Victoria University of Wellington, New Zealand. She has been teaching in the field of law and digital technologies for 18 years. Her expertise includes digital identities, online privacy, online safety for children and digital child rights. Simone has participated in several national and European research projects, amongst which the recent CONSENT (consumer sentiment regarding privacy on user generated content services). Until recently Simone was project leader of a four-year multidisciplinary project on cyberbullying. She is currently participating in the EU COMENIUS project Dynamic Identity (online privacy and identity for children). She is a member of various academic networks, such as EU Kids Online and the Cybersafety Research and Education Network, and is the editor-in-chief of Asser's IT and Law series.

Bibi van den Berg
Bibi van den Berg
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Dr Bibi van den Berg  is an associate professor at eLaw, the Centre for Law and Digital Technologies at Leiden University's Faculty of Law. Van den Berg studied and obtained her PhD at the Faculty of Philosophy of the Erasmus University in Rotterdam. After this she worked as a post-doc at the Tilburg Institute for Law, Technology and Society (TILT) of Tilburg University for three years. In 2012 she came to Leiden for her current function.
Van den Berg's research is focused on four themes: (1) Regulating human behaviour through the use of technology (techno-regulation), (2) identity, privacy and (cyber) security, (3) regulation and governance of/on the Internet, and (4) robotics and artificial intelligence.
Next to her role as a university lecturer, Van den Berg is a Meijers Fellow at the Faculty of Law, and Research Director at eLaw.

Sergei Boeke
Sergei Boeke
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Sergei Boeke LL.M. is research fellow and project manager at the Institute Security & Global Affairs at the Faculty Governance & Global Affairs, Leiden University. His key areas of expertise are cyber governance, cyber war and cyber espionage. He also focuses on terrorism in the Sahel (Africa).

Boeke is a former Navy officer and diplomat. After completing naval college in Den Helder he obtained his master's in law at the Vrije Universiteit, Amsterdam. He was subsequently posted as a supply officer on different warships and seconded as legal & financial advisor to the commanding officer to the second Marine battalion, deploying to southern Iraq in 2003/2004. He then briefly worked at as a policy officer and diplomat at the Ministry of Foreign Affairs before moving back to the Ministry of Defence to become the deputy head of the Afghanistan team. He joined Leiden University in 2013.

Dennis Broeders
Dennis Broeders
Core lecturer
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Dr Dennis Broeders is a senior lecturer and project coordinator at the Scientific Council for Government Policy in The Hague. He is also affiliated with the department of Sociology of Erasmus University Rotterdam as a Professor of Technology and Society. His main research and education fields are the application of modern technology in government policy (iGovernment), biometrics and (European) migration policy, Internet freedom, and cyber security governance. He is a guest lecturer at Erasmus University, other universities, and Clingendael Institute. He has been a guest researcher with the WZB in Berlin (2008) and the Oxford Internet Institute (2011). He is currently responsible for the project 'Freedom and Security in the Cyber Comain' at the Council, and is working on an Erasmus University based project on the role and place of the Dutch armed forces in the Dutch structure of cyber security governance, in cooperation with the Dutch Defence Academy.

Quirine Eijkman
Quirine Eijkman
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Dr Quirine Eijkman is a senior researcher and lecturer in Security and the Constitutional State at the Faculty Campus The Hague of Leiden University. She is also the head of political affairs and PR at Amnesty International Netherlands. Furthermore she is a member of the Advisory Board of the Protection of Civil Rights Foundation and the Dutch Jurists Committee for Human Rights (NJCM). Previously, she has worked at, amongst others, the Advisory Council on International Affairs, Utrecht University Roosevelt Academy, the Study and Information Centre for Human Rights of Utrecht University and the Dutch Red Cross. Her research is focused on the (side) effects of security measures on the constitutional state and human rights. Eijkman teaches courses at various Master's programmes at Leiden University in the fields of the constitutional state en security, counterterrorism, cyber-governance, international crisis and security management and human rights.

Marga Groothuis
Marga Groothuis
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Dr Marga Groothuis LL. M. is assistant professor at the Institute for Public Law, Faculty of Law of Leiden University. She obtained her LL.M. at Queen Mary and Westfield College in London. From 2001 to 2005 she worked as a legal specialist at the Constitutional Affairs Department of the Dutch Ministry of the Interior. In 2004 she obtained her PhD based on her thesis on legal aspects of automatic decision-making by government agencies. Her research currently focuses on legal aspects of digital government in Europe and on fundamental rights and the rule of law in the digital age. Groothuis is a fellow at the Meijers Research Institute of Leiden University and a member of the LDE Research Centre for Safety and Security of Leiden University, Delft University and Erasmus University Rotterdam.

Hans Hoogstraaten
Hans Hoogstraaten
Guest lecturer
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Hans Hoogstraaten, B.Sc. (Engineering) CISM, CISA, CISSP is an independant cyber security expert. Hoogstraaten has been active in the field of Information Security since 1996, as forensic investigator, innovator, security expert, principal consultant, and lecturer/ researcher. A safe digital society is an important motivation for him. Through his broad experience in technology, risk management, product development, security design and incident response he is an all-round expert. He has conducted research into detecting Advanced Persistent Threats (APTs) and led the investigation into the DigiNotar hack.

After his career at the Netherlands Forensic Institute, TNO and Fox-IT he has made the transition to education in 2013 in order to be able to share his knowledge and experience with students.
André Hoogstrate
André Hoogstrate
Guest lecturer
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Dr André Hoogstrate is an associate professor at the Faculty of Military Sciences of the Netherlands Defence Academy and lecturer at Delft Technical University. During 2014-2015 he was guest lecturer and researcher at the Centre for Terrorism and Counterterrorism (CTC) at the Campus the Hague Faculty of Leiden University. From 2000-2015 he was a forensic scientist at the Netherlands Forensic Institute. In 1998 he obtained his PhD in Econometrics at Maastricht University on the thesis Dynamic Panel Data Models Theory and Macroeconomic Applications. From 1997 to 2000 he was Assistant Professor Statistics/Econometrics at Tilburg University and CentER.
His key area of research is the use of data analysis and mathematical modeling techniques in forensic and military applications that originate from, or have a strong dependency on, cyberspace.
In the past few years his teaching has concentrated on lecturing specialized topics to professionals in the field of digital forensics, cyber strategy en cyber operations.

Nina van der Knaap
Nina van der Knaap
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Nina van der Knaap, MSc, is a PhD student at eLaw, the Center for Law and Digital Technologies at the Law School of Leiden University and investigations advisor for the Royal Netherlands Marechaussee.

Van der Knaap studied Forensic Criminology at Leiden University (MSc) and Criminology at Erasmus University Rotterdam (BSc). Her areas of expertise are digital forensic investigations, cybercrime and forensic criminology. In her PhD thesis she researches the following questions: What is the impact of digital evidence on financial investigations, how is digital forensic evidence used in and between law enforcement and private agencies and what would be the desired situation with regard to digital forensic evidence according to professionals/practitioners and literature? 

Leo van Koppen
Leo van Koppen
Core lecturer
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Leo van Koppen, MSIT, has been lecturer on Information Security Management (ISM) at The Hague University of Applied Sciences, Faculty of ICT & Design, since 1998. He became Head and Programme leader of the Information Security Management programme in 2008. Besides this he is project leader of the Centre of Cyber Security V i.c. and a member of the Cyber Security & Safety research group at The Hague University of Applied Sciences.

His key areas of expertise are information risk management, compliance management, information security management, business continuity management, enterprise architecture, security architecture, ITvsecurity and IT networking and embedded systems.

Van Koppen is a member of the Platform for Information Security (PvIB), the Association for information security in the Netherlands and of OWASP Dutch Chapter, a professional association of global members interested in learning more about software security.

Wojtek Kowalczyk
Wojtek Kowalczyk
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Dr Wojtek Kowalczyk is an assistant professor at the Leiden Institute of Advanced Computer Science (LIACS) at Leiden University. He obtained his PhD in Mathematics at Warsaw University in Poland, in 1986. From 1991 until 2011 he worked as a lecturer at the Computer Science department of VU University Amsterdam, where he conducted research and developed education programmes in the field of pattern recognition, neural networks machine learning and data mining.

Kowalczyk is co-founder of the Fraud Detection Expertise Centre where he works on several different projects for banks, insurance companies and government institutions. He is an expert in the field of real-time detection of anomalies in large and fast streams of data, such as bank transactions, click-streams, traffic data, access logs, etc. He has developed several systems for detecting credit card fraud, monitoring access to EPDs, and detecting abuse of information systems.

Kowalczyk has won two international data mining competitions (EUFIT'96 en Benelaern'99). He has published over 60 scientific articles.

Mark van Leeuwen
Mark van Leeuwen
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Mark P. van Leeuwen, M. Sc., MBA, information manager at Leiden University -  Faculty Governance and Global Affairs, has twenty years of experience in various fields of ICT. He has worked in the development of information systems, as well as in the field of business consultancy. His experience ranges from space industry and travel to banking and health care, and he has worked both for industry and the not-for-profit sector.

An important driver for successfully implementing ICT-related projects is the understanding of the underlying processes and the organisational culture. Implementation is therefore by definition a change management project. Visualisation is a powerful tool in persuading people to commit to a new ICT system or process.

Jan van der Lubbe
Jan van der Lubbe
Core lecturer
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Dr Jan van der Lubbe M. Sc. is Associate Professor and Head of the Information Security and Privacy Lab at the Faculty of EEMCS at Delft University of Technology. His key areas of expertise are artificial intelligence, data mining, security and privacy and cryptography.

Van der Lubbe received his PhD degree from the Faculty of Electrical Engineering, Mathematics and Computer Science at Delft University of Technology 1981.

From 1981 to 1986 he was with the National Aerospace Laboratory, where he performed research for ESA and NASA among others, both in the field of artificial intelligence and cryptography.

Van der Lubbe is Director of the postgraduate course on Applied Cryptography and member of various advisory boards and committees on security for the government as well as industry. He is (co)author of some 250 papers and 12 books on information theory, cryptography, machine intelligence, philosophy, history, semiotics and art.

Pieter Burghouwt
Pieter Burghouwt
Core lecturer
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Dr. Pieter Burghouwt M.Sc. is senior lecturer Computer Science at the Faculty of IT & Design of The Hague University of Applied Sciences. In addition to curriculum development and lecturing in the field of Computer Networks, ICT Technical Infrastructure, and Cyber Security, he conducts research in the field of Cyber Security as a member of the research group Cyber Security and Safety of The Hague University of Applied Sciences. His research focusses on the technical security of computer networks. From 2013 to 2015 he was as a researcher involved in the RAAK project “Beveiligd Water”, a research on the security of the Industrial Control Systems of the Dutch Water Boards.

In 2015 Burghouwt obtained a PhD degree in Cyber Security at Delft University of Technology on his thesis "Detection of Botnet Command and Control Traffic in Enterprise Networks".

 

Bart Schermer
Bart Schermer
Core lecturer
Organisation:
Leiden University
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Organisation:
Leiden University

Dr Bart Willem Schermer,  LL.M., is an assistant professor at eLaw, Faculty of Law, Leiden University. His main areas of expertise in education (regular, post-academic) and research are internet governance, cyber-criminality, privacy, and data protection. He teaches Internet Law at Leiden University and Internet Governance and Regulation by Technology at Leiden University College. He co-supervises PhD candidates in the field of cyber crime.
Schermer also gives courses at Euroforum and Study Centre Business and Government on the Personal Data Protection Act.

Schermer is a partner at the legal consultancy Considerati. In this role he advises public and private security organisations on the legal aspects of cyber security. His main activities include executing privacy impact assessments, statutory checks on compliance, and legal consulting.

Maryse Ducheine
Maryse Ducheine
Guest lecturer
Organisation:
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Organisation:

Maryse Ducheine is a Director of Communications at Gemeente Den Haag (Municipality The Hague). Furthermore, she is a trainer, coach, and consultant with her own consulting practice in the field of strategy and reputation.

From 2008 to 2013 she was the Head of External Communication at KPN. During this period she gained a wealth of experience in managing (cyber) issues and crisis situations. Reputation and Issue Management were already familiar to her in her capacity as spokesperson for the Minister of Finance and the Minister of Economic Affairs. Ducheine is trained as a journalist. In the open programme and elective Cyber & Crisis Communication and Reputation Management she will share her knowledge of and experience in both modern media creation and the cyber-society with communication professionals in an executive or administrative function who wish and need to be prepared for a cyber crisis situation.

Simone Fennel
Simone Fennel
Guest lecturer
Organisation:
Privacy Company
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Organisation:
Privacy Company

Simone Fennell LL.M. M.Phil. CIPM CIPP/E studied Law & Technology and the Research Master at Tilburg University and specialises in legal aspects of privacy. She is currently working as a senior consultant at Privacy Company (The Hague), and assists her clientele on all privacy aspects including compliance and implementation. She is – amongst others – a guest lecturer at CIBIT, the Cyber Security Academy and Leiden University. With Privacy Company, she is responsible for the continuing education programme. Simone published various (internet) articles and co-authored several books, including recent materials that can be found at the Privacy Company website.

 

For the Cyber Security Academy, Simone will lecture on international aspects of privacy. 

Dennis de Geus
Dennis de Geus
Guest lecturer
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Dennis is a cyber security strategist within Hewlett Packard Enterprise. In his view cyber, security is an asset for a company if addressed properly and from an integrated perspective. Having worked both as a CISO as well as an advisor, he knows how to effectively make organizations more secure by aligning business and IT requirements in the context of the organizations environment.

 

With over 18 years of experience in IT security, finance, auditing & advisory work Dennis has the background and experience to position cyber security as a business enabler. By not only considering it from the perspective of technical threats & measures, but also from a strategic, process and people perspective. He is well networked in the Dutch cyber security community and has actively worked with organizations as the NCSC, ENCS, The Hague Security Delta, Telecoms-ISAC and others. He was a member of the national ICT-Response Board. As an advisor to the board he has broad experience in developing business aligned cyber security strategies and broad experience in leading organizations though cyber transformation programs.

Renato Kuiper
Renato Kuiper
Guest lecturer
Organisation:
VKA
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Organisation:
VKA

Renato Kuiper, B.Sc. (Engineering), CISA, CISSP, CSF, is management consultant/architect with Verdonck, Klooster & Associates (VKA) and guest lecturer at The Hague University of Applied Sciences (HHS), in the areas of  security (in) architecture and cloud and cloud security.

Kuiper has more than 25 years of experience in ICT and information security/ risk management. His areas of expertise are security architecture, IAM and Cloud and security. He worked as a lecturer at the HTS Arnhem (Bachelor for Technical Computer Area), for 10 years as a Principal Consultant at LogicaCMG, and 3 years as security practice lead at HP.

Kuiper developed a lot of different security architectures for a.o.the Dutch Police and Dutch Government and several banks in Holland.At this moment he is in an engagement as Enterprise (security) architect at NS (Dutch Railroads).

VKA conducts strategic ICT projects for its clients in government and industry. Projects range from strategic consulting assignments in various fields to programme management, direction and management of complex projects.

Herbert Leenstra
Herbert Leenstra
Guest lecturer
Organisation:
KPN
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Organisation:
KPN

Herbert Leenstra M. Sc. is a Lead Architect Security at Koninklijke KPN NV (Royal KPN N.V.). He has more than 15 years of expertise in telecommunications and vital infrastructures.He is Co-founder of the innovative "Working tomorrow" programme for bachelor's and master's students. Working Tomorrow is the graduation programme that focuses on the feasibility of innovative applications and developments in the market. The students develop prototypes and demos to explore new technology. They also investigate implementation risks and mitigation factors. The Working Tomorrow has cooperative relationships with all universities (master) and most of the HBO institutions (bachelor's) in the Netherlands.

Christian Prickaerts
Christian Prickaerts
Guest lecturer
Organisation:
FOX-IT
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Organisation:
FOX-IT

Christian Prickaerts, GCFA, CISSP, is a trainer and Principal Forensic IT Expert, Business Unit: Cybercrime, at Fox-IT.
Christian worked as a senior systems manager at Maastricht University for several years. During this period he was also assigned CERT tasks. Christian has been a forensic IT investigator since 2004. He leads and takes active part in forensic IT investigations. Christian has extensive knowledge of operating systems and network protocols. He regularly gives presentations in the field of IT security and IT forensics. On occasion he is called as an expert witness in court. Because he is active both in criminal justice and in the private sector his experience in forensic IT is extensive.
Fox-IT forensics is specialised in conducting digital investigations with the purpose of detecting criminals. Through combining digital investigation techniques, specially built instruments and onsite incident response, investigators can be deployed to secure electronic systems and collect and analyse digital evidence within hours of the security invasion, hack, or theft.

Fred Streefland
Fred Streefland
Guest lecturer
Organisation:
Leaseweb
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Organisation:
Leaseweb

With more than 22 years of experience within the Security & Intelligence domain (Royal Netherlands Air Force, Military Intelligence Service, IBM, Accenture, ENCS, Exact Software), Fred is currently working as the Corporate Information Security Manager (CISO) of LeaseWeb. Within this organisation, he is managing a small team of security engineers and is globally responsible for the information security of the LeaseWeb Group and its entities. LeaseWeb is a Dutch hosting provider with the fastest network of Europe and operating worldwide.

Fred’s specialties are: security strategy, risk assessments and the implementation of ISO standards (ISO 27001). Fred holds an Executive Master of Security & Defense (EMSD) and a bachelor’s degree (HEAO MER) from the University of Applied Sciences of Amsterdam. He holds certificates of several security courses (Black Hat, SABSA, Idaho National Lab, IBM Big Data Analytics).

Jeroen van der Velden
Jeroen van der Velden
Core lecturer
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Dr Jeroen van der Velden is an associate professor of Strategy Alignment and Director Strategy Center at Nyenrode Business University. In addition, he is a lecturer at SIOO and founder and co-owner of Viciency-distant teamwork, a platform that supports organisations to introduce and implement new forms of working.

As a coach, consultant, programme and/or change manager, he is active in various sectors; government, finances, utilities and food and process industries. As a researcher, he focuses on issues related to strategy implementation and new ways of working and organising. His doctoral research at Delft University of Technology focused on new methods such as remote collaboration.

Xander van der Voort
Xander van der Voort
Guest lecturer
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Xander van der Voort M. Sc. and his company vanderVoort Cyber Security (www-v-cybersecurity.nl) work on information security in general and the security of industrial control systems in particular. His clients are generally from the fields of energy, oil & gas, chemistry, water and industrial production.

Van der Voort studied cognitive psychology at Leiden University and Computer Science at Delft University of Technology, specialising in artificial intelligence. After his graduation he worked as a researcher for Shell, Nijmegen University and Groningen University in a wide range of fields such as supercomputing, knowledge systems, human factors, information security, command & control systems and knowledge management. Van der Voort conducted a long-term study for the Royal Netherlands Army and was involved in the development of operational supporting information systems at the Ministry of Defence. Next to consulting clients, vanderVoort Cyber Security is also involved in developing, organising and providing training. Van der Voort is closely involved in post-academic research and has taught at, amongst others, TU Delft Toptech (cyber security, cryptography), Tias Nimbas (auditing critical infrastructures) and The Hague University of Applied Sciences (security management).

Mireille Snels
Mireille Snels
Tutor
Organisation:
Leiden University
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Organisation:
Leiden University

Mireille Snels, M.A., is a programme manager and tutor for the master's programme Cyber Security at Leiden University.

Snels studied Dutch language and literature and obtained her post-graduate certificate in education at the University of Amsterdam. After a brief career as an editor and copywriter she worked as an education policy officer and project leader at the University of Amsterdam. Next, she was secretary and project leader accreditation at QANU (Quality Assurance Netherlands Universities).

After a three year stay in London, where she supervised several different projects in the fields of outreach and widening participation, she became department secretary at Delft University of Technology in 2010 and lecturer in communication skills and study supervisor at The Hague University of Applied Sciences in 2012. From July 2013 onwards she has been involved with the CSA as a project leader/advisor in the field of programme development, accreditation, quality assurance, marketing, and organisation.

Esther Keymolen
Esther Keymolen
Core lecturer
Organisation:
Universiteit Leiden
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Organisation:
Universiteit Leiden

Esther Keymolen is an assistant professor at eLaw, the Center for Law and Digital Technologies at the Law School of Universiteit Leiden. Esther has a background in philosophy of technology and philosophical anthropology. Her research focuses on online trust, big data ethics, digital governance and online privacy. In her dissertation, Trust on the Line. A Philosophical Exploration of Trust in the Networked Era, she has analysed the impact of new technologies on the development of trust in interpersonal interactions. More specifically, she pays close attention to trust-building in online environments such as social network sites and the peer-to-peer economy. Esther aims to widen the scope of interpersonal trust in order to include the workings of technology in trust-relations. Before starting her doctoral research in 2010, Esther worked at the Scientific Council for Government Policy (WRR). As a scientific staff member, she co-authored the book iGovernment and conducted research in the domain of digital youth care.