Department of Public Law

Department of Public Law



1. Fundamentals: Theoretical Foundations and Doctrinal Structures

Philosophical and Public Security Law Implications of ‘Stochastic Terrorism’

This project centres on the concept of ‘stochastic terrorism’, an under-examined yet growing threat to public security. As described by leading scholars, stochas­tic terrorism involves ‘the use of mass media to provoke random acts of ideolog­i­cally motivated violence that are statistically… more

This project deals with action-oriented measures of personal prevention in police law, which are linked to predic­tions that a particular person will behave unlaw­fully in the future. Such measures can be found in almost all areas of the special administrative law, ranging from reliability under… more

Legal Hermeneutics and Metaethics

Metaethical Contributions to the Legal Indeterminacy Debate more

The Different Understandings of ‘State’ in Germany and the United States more

Juridical Perspectives Between Islam and the West more

While civil disobedience is widely discussed in political theory, it remains mostly neglected in German legal schol­ar­ship. Bridging this gap, this dissertation examines under what conditions, and in what ways, civil disobedience may be constitutionally protected under German law. My primary… more

To limit the exercise of police powers, German public security law authorizes police to avert so-called dangers. That is, a ‘danger’ is a condition for legitimate use of police power. ‘Danger’ thereby is a term of art. Not all risks are ‘dan­gers’, and in the common doctrine, there is only a… more

2. Trends: In­ter­na­tio­na­li­za­ti­on, Di­gi­ta­li­za­ti­on, and Frag­men­ta­ti­on


Die Polizei in der offenen Gesellschaft more

Comparative European Study – Rights After Conviction

Joint cooperation project with Aristotle University Thessaloniki more

Shifts in Interests in European Extradition Law

Comparing Extradition Models of the Council of Europe and the European Union more

Public Law Implications of the Digital Attention Economy

The business model of some of today’s largest, most valuable, and socially influential companies such as Google (Alphabet), Facebook (Meta), and Twitter can be described as capturing human attention and selling it to advertis­ers. Using powerful AI and sophisticated behavioral science and… more

The Deprivation of Nationality in the Fight Against Terrorism

The last few years have seen a disquieting new trend emerge in global Islamist terrorism. The primary threat to Western societies used to be posed by terrorists entering Western countries from abroad. But nowadays citizens of Western countries also travel in the opposite direction to participate in… more

Cyber attacks on government institutions and information technology systems occur regularly, representing a sub­stan­tial security threat to Germany and its economic and political interests. Besides passive defence measures, the so-called ‘hack back’ can be considered an active defence measure… more

Language Obligations of the Police

In the quest for public security, communication is the most important operational resource used by police. When Ger­man police act in a preventive capacity, officers generally speak German while performing their duties. To over­come language barriers, the police may deviate from German, but there is… more

Legitimation and Representation – German Civil Service Law

People with migrant backgrounds are strongly underrepresented in German policing. This fact is legally problem­atic for multiple reasons. First, due to violations of equality principles guaranteed in Art. 3 and Art. 33 II of the German Constitution. On an individual level, structures that discourage… more

3. Challenges: Fundamental Rights, Rule of Law, Democracy

German Constitutional Law from a Transnational Perspective more

Periodic Surveillance Barometer for Germany

State surveillance measures and their impact on constitutional freedoms have long been the subject of legal and political discourse. Building on prior, mainly theoretical, considerations about the need for realizing an “overall accounting” of surveillance, we began developing a broader… more

Democracy and State Secrets

Calibrating Public Accountability in Modern Intelligence Gathering more

Intelligence Information Sharing

The Relevance of Trust for the EU Rule of Law Crisis more

Epistemology of the Terrorism Threat

A Critical Appraisal of Risk Assessment Structures of the European Court of Human Rights more

Identity Controls at ‘Dangerous Places’

In German police law security measures usually demand a ‘concrete danger’. This threshold is fundamental for the rule of law. Since the 1970s, however, the police are entitled to undertake precautionary measures irrespective of a con­crete danger. One of these new authorities is the… more

The Legal Framework of Security Agencies Forecasting Based on the Use of Risk Assessment Instruments

Risk assessment instruments provide a promising but controversial forecasting approach for security agencies. This doctoral project aims to structure the legal framework of their use in counterterrorism and counterextremism. A com­pre­hen­sive analytical framework will be developed by… more

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