What are you supposed to do if something goes or has gone wrong? Whether it be a break-in, an accident or an unsafe situation of any other kind, or a data breach or a cyber-attack; please read how to report each type of incident below.

When we work from home, we are extra vulnerable for cyber attacks and data breaches. If you use a personal device to log on to the university network, please create a secure online workplace.

What are you supposed to do if something goes or has gone wrong? Whether it be a break-in, an accident or an unsafe situation of any other kind, or data breach or cyber-attack; please read how to report each type of incident below.

The bachelor's programmes at the Faculty of Governance and Global Affairs, based in the city of international cooperation and politics – The Hague – prepare you for a future in governance, leadership, and diplomacy. In the administrative heart of the Netherlands, you will learn to tackle the challenges…

Conference

Lecture

Discover insights and advice from Leiden scientists on bullying, how to stop and prevent it. Learn why people bully, how bullied children can get help and what it takes to create a safe environment. Find out how anti-bullying programmes work in schools and why bullying is a serious problem that needs…

The Hague Threat Intelligence Exchange (Hague TIX) is happening on 12 June 2023. Monica Kaminska, Assistant Professor of International Security and Technology at the Institute of Security and Global Affairs, is one of the organisers of this unique conference ‘which brings together cyber threat intelligence…

Senior Researcher at the Institute of Security and Global Affairs and Associate Fellow of The Hague Program of Cyber Norms François Delerue was awarded the 2021 Book Prize of the European Society of International Law for his book Cyber Operations and International Law published by Cambridge University…

The digital age offers unprecedented opportunities: information is always accessible, systems are interconnected, and processes are automated. However, these developments also give rise to new threats. During the Night of Digital Security on 26 May at the Wijnhaven building, more than experts shared…

This page gives more information about what a crisis is, what consequences it has and which organisation will be activated if a crisis occurs.

Festival

Earlier this week, a working group of the United Nations, comprising all 193 of its member states, adopted a consensus report on norms for responsible state behaviour in cyberspace. Dennis Broeders, full professor of Global Security and Technology at the Institute of Security and Global Affairs, Leiden…

On 8 and 9 June, the second edition of EU Cyber Direct’s Closing the Gap conference took place at the Egmont Palace in Brussels, Belgium. This year’s edition was organized by François Delerue and Dennis Broeders as part of their participation in the EU Cyber Direct project, of which the Institute of…

Cristina Del Real, Assistant Professor in Cyber Crisis at the Institute of Security and Global Affairs, participated in the presentation of the Office of Science and Technology (OficinaC) of the Spanish Congress of Deputies (the Spanish Parliament). She is an expert on cyber security, one of the four…

Cyber-attacks, privacy-related problems or failures in functioning: many technologies that are used every day have security issues that are solved when the software is already in use. A new interdisciplinary project, in which Olga Gadyatskaya, Harry Wijshoff, Alex Uta and Kristian Rietveld from the…

After working full-time for twenty-four years, Wendy Tonks decided to enrol in the executive master's in Cyber Security. She now proudly reflects on her time in the programme after receiving a ten for her thesis and graduating summa cum laude. ‘I could not believe it when I got my grade.’

During Cyberweek, from 17-24 October, the Faculty of Governance and Global Affairs (FGGA) highlighted its research and teaching on cybersecurity, digital developments, and their impact on society.

Vanaf september 2025 biedt de Faculteit Governance and Global Affairs de bacheloropleiding Cybersecurity & Cybercrime aan. Deze unieke Nederlandstalige opleiding leidt studenten op tot veelzijdige cyberexperts. ‘Er is veel vraag naar specialisten op het gebied van cybersecurity en cybercrime’.

Doing your taxes, Netflixing or driving a car: more and more daily activities are supported by computer applications. It is challenging and expensive to test software thoroughly, leading to errors in most applications. PhD candidate Benjamin Lion made a mathematical framework to deal with this problem.…

While the United States continues to carry out drone strikes, and China conducts large-scale cyber and information operations, Ukrainian and Russian soldiers live in trenches, and NATO sends tanks to the Donbas front to force a breakthrough. Has war changed dramatically in recent decades as a result…

He announced this news in a tweet earlier this month: 'Delighted to announce that I've been appointed Full Professor of Global Security and Technology'. So let's get more closely acquainted with Dennis Broeders (46), who explains why the Institute of Security and Global Affairs (ISGA) is ideal for him,…

Moderne oorlogsvoering kent geen grenzen. Dreigingen zijn steeds vaker digitaal. Promovendus Annelies van Vark stelt dat Scandinavië beter voorbereid is op gevaar. Zij pleit voor een sterkere rol van de krijgsmacht, herinvoering van de dienstplicht en paraatheid – óók bij burgers.

Technology holds so much promise – from self-driving cars to enhanced physical performance from smart implants under the skin. But we should not let ourselves be caught off guard. That is the message of Bart Custers, Professor of Law and Data Science in his inaugural lecture on 21 May. ‘We don’t talk…

The 'Melissa' project strengthens the Netherlands' digital resilience against ransomware through public-private collaboration. Discover the successes, such as the dismantling of the Qakbot botnet, and the insights that contribute to a more effective approach to combating ransomware crime, both nationally…

Het zal niemand ontgaan zijn dat de digitale dreigingen blijven toenemen. Uit monitoring door onze cybersecurity-experts blijkt dat er continu wordt geprobeerd om ook onze systemen binnen te dringen. Wat doen wij daartegen en hoe kan jij als medewerker bijdragen aan onze cyberveiligheid?

Education, Organisation

Evaluations of a most challenging year to both staff and students in terms of teaching and education support have turned out remarkably well. Although we had to switch to online education almost overnight, we pulled it off!

Eduard Fosch-Villaronga, Associate Professor at eLaw, contributed to 'Cyber–Physical–Human Systems', a book exploring the latest developments in interactions between cyber–physical systems and humans.

It was a memorable start to September. While Leiden marked the opening of the academic year, The Hague celebrated the launch of three new degree programmes. Students were welcomed on a blue carpet rolled out at the entrance to the lecture halls.

There is no such thing as the quintessential cybercriminal. It can be a Russian gang or the boy next door. What we do know is that cybercrime is an enduring societal problem that can affect every one of us. ‘We do not know enough about the criminals’, says Professor of Governing Cybercrime Rutger Le…

The European Union Cyber Diplomacy Initiative (EU Cyber Direct), of which Leiden University is one of the implementing partners, joins forces with the Federal Public Service of Foreign Affairs of Belgium and numerous research institutions and civil society organisations around the world to organize…

On Saturday 25 June, the Europa Institute of Leiden University hosted the 61st Leiden-London Meeting, an annual event organized jointly by the Europa Institute and the British Institute of International and Comparative Law (BIICL). This year’s meeting had “Interdependence, cooperation and strategic…

An escape room gave staff the chance to test their knowledge about cybersecurity at work. Would they manage to defuse the bomb in time without falling for the phishing emails or causing a data breach?

From January 2026, Leiden University will have an additional location in The Hague: Spui Campus. As well as teaching, study and sport facilities, it will offer 90 workspaces and meeting rooms for Leiden University staff.

De Universiteit Leiden is al 25 jaar stevig geworteld in Den Haag. Dat werd zichtbaar tijdens de feestelijke bijeenkomst rondom de foto-expositie Universiteit Leiden in Den Haag: Onderzoekers van de stad.

We are thrilled to announce that Marietje Schaake will deliver the keynote address at the eLaw 40th Anniversary Conference on 2 April 2025, as part of the prestigious Hans Franken Lecture, the yearly lecture dedicated to one of the founders of eLaw, Hans Franken.

On 24 April 2024, Carlotta Rigotti and Gianclaudio presented their new report on sexual violence and harassment in the metaverse during a webinar co-organised by AUDRi, Equality Now, and VULNERA.

Alumna Nadia Kadhim started in 2017 as a corporate lawyer implementing the General Data Protection Regulation (GDPR) at one of the companies where she volunteered. By late 2022 she had received both a Most Inspiring Women in Cyber Award and was on the Forbes 30 under 30 list with her legal start-up…

The Air and Space Law (Advanced LL.M.) master’s programme at Leiden University is among ten ‘excellent master’s programmes’ at Dutch universities. This is according to ‘Keuzegids masters 2024’, a guide to master’s programmes in the Netherlands.

Dr Antonio Missiroli has been appointed as Associate Senior Policy Fellow for Emerging Security Threats at the Institute of Security and Global Affairs (ISGA).

The EU proposal for a regulatory framework on artificial intelligence will not prevent the dangers of cybercrime or the spreading of fake news using ChatGPT. Cyber criminals can use the new technology to write harmful software, phishing mails and fake news.