Prof. Dr. Wolfgang Hoffmann-Riem, LL.M.

Honorary Member of the Executive Board

Professor Wolfgang Hoffmann-Riem, LL.M. (Berkeley), was director of the Hans-Bredow-Institut from 1979 until he became Senator of Justice for the Free and Hanseatic City of Hamburg from September 1995 to November 1997. He was also chairman of the newly created executive board of the institute from July 1998 to December 1999. Since December 1999, he has been an honorary member of the Executive Board.

He studied law in Hamburg, Freiburg, Munich, and Berkeley. He has been a professor of public law and administrative science at the University of Hamburg since 1974 and has been emeritus since 2008.

From 1999 to 2008, he was a judge at the Federal Constitutional Court (First Senate).

From 2007 to 2019, Wolfgang Hoffmann-Riem was a member of the European Commission for Democracy through Law (Venice Commission of the Council of Europe). He was a fellow at the Wissenschaftskolleg zu Berlin from 2009 to 2010. Since mid-2012, he has been an affiliate professor at Bucerius Law School in Hamburg.

The German President awarded Wolfgang Hoffmann-Riem the Grand Cross of the Order of Merit of the Federal Republic of Germany. He is also the recipient of the Emil von Sauer Prize. In 2024, he received an honorary doctorate from the Pontifical Catholic University of Rio Grande do Sul in Brazil.

Wolfgang Hoffmann-Riem researched and taught at Stanford Law School, Harvard Law School, Tulane Law School, Hastings College of the Law, and the Columbia Institute for Tele-Information. He was a member of the Expert Commission on New Media in Baden-Württemberg; the Inquiry Commission on New Information and Communication Technologies of the German Bundestag; the Inquiry Commission on Parliamentary Reform of the Parliament of the Free and Hanseatic City of Hamburg; and the “Commission on Media Responsibility,” which was appointed by Federal President von Weizsäcker. He publishes works on media law, media social science, constitutional and administrative law, economic and environmental law, police law, and legal sociology.

Contact information

Prof. Dr. Wolfgang Hoffmann-Riem, LL.M.

Honorary Member of the Executive Board

Leibniz Institute for Media Research | Hans-Bredow-Institut (HBI)
Rothenbaumchaussee 36
20148 Hamburg

  • +49 40 450 217-0 (Office Management)

Last update: 11.07.2025

Works by Prof. Dr. Wolfgang Hoffmann-Riem, LL.M.

Tastatur mit einer goldfarbenen Taste, die ein weißes Abzeichen zeigt
Beitrag Media Research Blog Post

Algorithmic Amplification of Negative Discourse as a Systemic Risk

How does attention-economy-driven algorithmic amplification of conflict-driven and negative-emotional communication distort public discourse? And does this distortion constitute a systemic risk under the Digital Services Act (DSA)? This blog article refers to our previous blogpost on "Platform Badges for Civic Communication", explains why such interventions are needed, and outlines how they could address these systemic risks.

Cover of the report “Generative AI from the Perspective of Young People”
Publikation Publication on Safer Internet Day 2026

Generative AI from the Perspective of Young People

The use of generative AI, especially ChatGPT, is now firmly established among young people online. A study by Kira Thiel, Claudia Lampert and Eleysa Memis explores young people's views on generative AI, highlighting its significance in their daily lives.

Cover des Arbeitspapiers
Publikation Working Paper Available for Download

Public Service Media Enabling Dialogue

For the project “Dialog Formats in Public Service Media,” Magdalena Stratmann conducted a literature analysis on “The Role of Public Service Media as Enablers of Dialogue in Digitalized Societies.” This analysis is now available for download as a working paper.

Vorschau des Artikels von Christian Ollig auf epd Medien
Publikation Article for epd Medien

How the Digital Services Act (DSA) Regulates Platforms

U.S. politicians accuse the European Union of endangering freedom of expression with the Digital Services Act (DSA). However, media law expert Dr. Christian Ollig argues that the DSA actually protects users' opinions from arbitrary censorship by platform operators. It also gives users a legal basis to assert their freedom of expression against large platform operators at the European level.

Cover of the book
Publikation Contribution to an Anthology

Health Communication

Claudia Lampert, along with Prof. Dr. Eva Baumann and Dr. Bettina Fromm, published an article in the Health Sciences handbook that provides an overview of health communication. The handbook is now in its eighth edition.

Cover of the article written by Anna von Garmissen published on January 10th, 2026 on the media platform of epd Medien: "Gefährliche Abwärtsspirale. Zur Lage des Journalismus in Deutschland"
Publikation Article in epd Medien

Studies on the State of Journalism in Germany

What is the state of journalism in Germany? In her article for epd Medien, Anna von Garmissen discusses three recent studies on the state of journalism in Germany. According to von Garmissen, the findings are thought-provoking and, when considered together, should be alarming to all of us.

Hände tippen auf Laptop-Tastatur, darüber eingeblendete Symbole für Text, Dokument, Lupe und Auszeichnung mit Häkchen.
Beitrag Media Research Blog Post

Platform Badges for Civic Communication

How can platforms address distortions in the digital attention economy without restricting free expression excessively? This blog post explores how new incentive structures can promote constructive communication on digital platforms and the potential of the Digital Services Act to facilitate such interventions.

Cover of the Publication
Publikation Chapter in Anthology

Contextualized Repertoire Maps in Media Usage Research

In their article, Dr. Lisa Merten and Prof. em. Dr. Uwe Hasebrink present contextualized repertoire maps as a method for recording media repertoires based on a study on news usage and discuss their possibilities and limitations in media usage research. Their article is part of the anthology “Researching Media, Data, and Networking Practices: Methodological Concepts and Research Software.”

Publication by Jan-Ole Harfst in the special edition
Publikation Special Edition of the Bonner Rechtsjournal

Communication Risks in Online Environments

How can German democracy remain resilient in the face of the communicative threats posed by the digital space? Jan-Ole Harfst's article shows that communicative threats on the internet cannot be countered at the national level alone, but require supranational protection of democracy, and assesses the significance of the Digital Services Act in this context.

Publikation Internet Policy Review

Can Quality Badges Improve Communication on Online Platforms?

A seal of approval for civil communication could promote successful public communication on online platforms while respecting users'freedoms. In their article 'Platform Badges for Civic Communication. An Interdisciplinary Discussion of a Risk Mitigation Measure Pursuant to Art.', Jan Rau, Jan-Ole Harfst and Dr. Tobias Mast examine various design options for such seals.

Cover of the publication
Publikation Open Access Publication

Global Media and Internet Concentration

The report offers a thorough overview of the development, economic importance, and market concentration of major companies in Germany's telecommunications, media, publishing, and internet sectors from 2019 to 2023. It places a particular focus on the growing dominance of digital platforms.

Cover der Zeitschrift "Medien & Kommunikationswissenschaft" Heft 4/2025
Publikation Available Open Access

Issue 4/2025 M&K published

Issue 4/2025 of our open access journal “Medien & Kommunikationswissenschaft" (M&K; Media & Communication Studies) has been published online via the platform Inlibra.

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