Humans are increasingly losing agency on social media. A team of legal scholars from Leiden University, computer scientists from other universities and civil society organisations, is conducting a study into the balance of power between Big Tech and users.

De faculteitsraad is het medezeggenschapsorgaan van de faculteit. De raad fungeert als de vertegenwoordiger van studenten en personeel, en als klankbord voor het faculteitsbestuur. De overlegvergaderingen tussen de faculteitsraad en het faculteitsbestuur zijn openbaar en vinden ongeveer om de zes…

As a university employee, you probably work with personal data. That is not just names and telephone numbers – it can also include things like cookies. How can you make sure you are working in a privacy-proof way?

On this page you will find information about the university buildings, a workspace at the faculty and other facilities such as a LU-card and access to the university libraries as well as on who to inform in case of illness.

If you work at the university and are in scale 11 or above, you have the option of concluding a function-based contract.

Giving an effective lecture requires not only careful preparation of the content, but also clear structures, visual support and presentation techniques. Some guidelines and tips to keep your lectures engaging and well structured are presented here.

Regardless of whether you work at a desk or in a lab, all workplaces have their risks. As your employer, the University aims to create a healthy workplace and to limit possible health risks. Here you will find the main risks and measures that we take to reduce them.

Congratulations on your awarded grant. Here is a checklist of what to do next and who you will need to involve to get your project started.

From assessment periods and deadlines to invigilators and organising digital assessments. Everything you need to think about for planning, organising and communicating assessments.

If your work allows it, you can work partly from home and partly from a university location. How exactly this combination looks for you depends on your own work and that of your team.

Many Leiden University employees engage in ancillary activities. The University stimulates such activities because we believe that the right place for a university is at the very heart of society. Ancillary activities bring together research, teaching and society. However, there are some limits on what…

Personal development, Working effectively

If you want to hire someone on a temporary basis, such as a temp agency worker, guest lecturer or independent contractor, certain rules apply. Find out more about your options and what you need to take into account. You should always consult your HRM adviser before hiring staff.

Marjan van Dasselaar is the Staff Ombuds Officer. The Staff Ombuds Officer gives independent advice to the University on how the staff’s work environment can be made safer.

GROW: Conversations on Performance, Development and Well-being (Gesprekken over Resultaat, Ontwikkeling en Welzijn). The new GROW interviews offer an opportunity to speak openly with each other about your work, development and well-being.

Staff from eLaw – Center for Law and Digital Technologies contributed to the ACM Conference on Fairness, Accountability, and Transparency (FAccT), held in Athens from 25 to 27 June 2025. The ACM FAccT conference is one of the world’s leading venues for interdisciplinary research on responsible and ethical…

Four promising young researchers will be able to conduct two years of research at a university abroad thanks to a Rubicon grant from the Dutch Research Council (NWO). The Leiden laureates are Renske Janssen, Girija Josh, Anne van der Meij and Yana van der Weegen.

Cancer immunotherapy represents a significant breakthrough in cancer treatment. However, tumors have numerous mechanisms by which they evade destruction by the immune system. It is therefore necessary to decipher and reverse these mechanisms in order to improve immunotherapies.

The KNAW has appointed 17 new members, including Leiden University's Vanessa Mak, Professor of Private Law, and Herman Paul, Professor of History. The KNAW has approximately members, who are outstanding scientists and scholars from all disciplines.

Organisation

In anticipation of future legal reforms on gender-based violence in the Republic of Moldova, Dr Carlotta Rigotti was invited by the United Nations Population Fund to participate in a roundtable discussion on legislative and policy approaches to online and technology-facilitated violence.

Loes Janssen would like to foster well-being of families by using an app and sending families short and fun activities each day to do together. For the Synergy Award ’21, PhD candidates were invited to submit their innovative idea on how to create societal impact. Watch the final on 4 February and vote…

Despite a lack of specific legislation on this issue, Dutch Minister of Justice and Security Dilan Yeşilgöz is allowing the national police force to experiment with facial recognition technology.

Vanessa mak knaw

In a new blog, Simone van der Hof, Professor of Law and Digital Technology, explains why existing European regulations such as the GDPR, AVMSD, and DSA still fail to adequately protect children from the risks of social media and digital services.

In het asielplan van vorige week kondigde het kabinet aan meer in te zetten op vertrek van ’Dublin-claimanten’. Daarbij stelt het kabinet z’n hoop op een hernieuwd EU-plan.

The transcription factor MYC is a master regulator implicated in the majority of human cancers. Despite its central role, MYC has long been considered "undruggable" by small molecules, lacking binding pockets and featuring disordered regions. While larger biomolecules could potentially disrupt MYC function,…

Research

Research

The brain structure of young people with conduct disorder differs significantly from that of their typically developing peers. This is the conclusion of an international study that analysed more than two thousand MRI scans, recently published in The Lancet Psychiatry. Dr Moji Aghajani, one of the principal…

A variety of age checks are required, both in order to protect children and to ensure that they can participate online, a new study funded by the European Commission finds. The article on the study, co-authored by Simone van der Hof, Professor of Law and Digital Technologies at eLaw, was published in…

The student debate in Leiden’s Stadsgehoorzaal promised to be ‘the key to your vote’. That may sound hyperbolic, but what this well-attended debate did achieve was increased trust in politics. ‘They even let each other finish their sentences’, the flabbergasted students concluded at the end.

From cities that sometimes deviate from national foreign policy to the direct influence of geopolitics on local developments, PhD candidate Pieter Jeroense, director of VNG International, examined seventy years of the internationalisation of Dutch municipalities and observed notable trends.

The master thesis: for many students it is a true crowning glory. Some theses are truly excellent. Those are rewarded with the FSW Thesis Prize. This year, this award was won by Roosmarijn Goldbach (master’s Psychology) and Matija Čuljak (research master’s Psychology), who respectively researched borderline…

Before patients can take a pill, scientists often spend years in the lab developing and testing a candidate drug. That often includes experiments with laboratory animals. As head of the rodent facility, Ilze Bot and her colleagues ensure that these experiments are conducted in an ethically responsible…

Is aviation on a one-way journey or a round trip? That is the question Steven Truxal will answer in his inaugural lecture From Disruption to Innovation in Air and Space: Legal Solutions for a Sustainable Future on Monday 15 November. This professor of air and space law is positive. That’s one thing…

Climate change, biodiversity loss and environmental pollution are urgent problems that call for close collaboration between lawyers and scientists. Dr Hilde Woker and Dr Jason Rudall, both Assistant Professors at Leiden University, are investigating the important interface between law and science.

Maryam Alqassab, an assistant professor at ICLON (Leiden University Graduate School of Teaching), helps train new PhD supervisors and knows how demanding the role can be. When asked to contribute to an online handbook for PhD supervisors, she didn’t hesitate: ‘Everything supervisors do or are involved…

Leiden University strives to accommodate research talent, which is why it does its best to create an inspiring environment for PhD candidates. Therefore, we offer a training program for PhDs that is both complete and challenging. That is why we offer a training program for PhDs that is both complete…

The PhD track involves many different aspects. As well as important administrative steps that you have to take, for example, there are also introductory activities, a training programme and opportunities for research abroad.

Collaborating and learning from other fields – that is what bioinformatician Hannah Augustijn enjoys most about doing research. During her PhD at Leiden University, she developed new ways to search within bacteria for the antibiotics of the future.

Starting four years ago, the same privacy laws apply throughout the European Union: the General Data Protection Regulation (GDPR). The law also affects our work at the university. As a refresher, we spoke with Privacy Officer Max van Arnhem about privacy in the workplace and what to do if something…

eLaw reflects on a very successful turnout at this year's 17th edition of the annual CPDP Conference in Brussels. This year, the conference was rebranded as CPDP.ai in order to draw attention to AI regulation and governance beyond privacy.

The pesticide thiacloprid turns out to be more harmful than previously thought. It can disrupt the lives of freshwater invertebrates and their communities, upsetting the balance and functioning of entire freshwater ecosystems. This was shown by ecologist Henrik Barmentlo and colleagues, their research…

Five Leiden research projects in history, law and AI have received SSH Open Competition M 2024 funding from the Dutch Research Council (NWO). The researchers have up to five years to work on a promising idea.

On 20 September 2024, Leiden University colleagues Associate Professor Gianclaudio Malgieri (Main Applicant), Assistant Professor Michael Klos (Co-Applicant), Professor Simone van der Hof (Co-Applicant), Constanta Rosca, Maria-Lucia Rebrean and Maëlle Picout gladly welcomed RESOCIAL’s consortium members…

eLaw – Center for Law and Digital Technologies has officially launched its participation in AI:Liner, a Horizon Europe project that will transform how Europe manages its aging sewer infrastructure through artificial intelligence and digital innovation.

Two research groups involving Leiden University have been awarded a major European grant, the ERC Synergy Grant. This for research on the development of membranes that can clean water and purify medical drugs and research on the biological clock in certain bacteria.

Pesticides can form a toxic cocktail when they occur in combination in surface water. This is the finding of research that Leiden University and the Dutch National Institute for Public Health and the Environment (RIVM) presented on Monday 14 October. The Dutch Ministry of Infrastructure and Water Management…