Choose your lawyers or partners according to the appropriate search criteria:

Practice Areas

Dr. Jürgen Hartung

Attorney (Rechtsanwalt)
Practice Areas:

Information Technology & Communications


German, English

Office Cologne

Telephone: +49 221 2091 643
Telefax: +49 221 2091 333



Dr. Jürgen Hartung is specialised in advising enterprises on data protection and IT law issues with a focus on outsourcing, IT projects and e-commerce. His data protection experience covers a wide range of matters, e.g. Internet of Things, mobile services, internal investigations, international transfers of personal data, social media, data breaches, data protection organisations, data-protection audits, etc. Furthermore, Jürgen Hartung advises on compliance issues, including risk analyses and the structuring of internal compliance organisations. He is also the firm’s contact person for the area South-East Asia region.

As a leading IT lawyer, Jürgen Hartung is regularly recommended in international rankings such as Chambers Europe, Legal 500, Who's Who Legal and Best Lawyers. In 2019 he was named IT Lawyer of the Year by the US publishing house Best Lawyers in Germany. Jürgen Hartung is also frequently represented in the JUVE rankings and has been the most recommended data protection lawyer in the study for many years. WirtschaftsWoche lists him amongst the top lawyers for compliance and IT law in Germany.

Career / Education

Jürgen Hartung is a partner of Oppenhoff & Partner. From 2000 to 2007 he was an Associate and Managing Associate at Oppenhoff & Rädler/Linklaters LLP. He studied law and international politics at the Universities of Tübingen (Dr. iur.) and Wales, Aberystwyth, and as part of his legal training worked from 1999-2000 for the American law firm of Baker & McKenzie in New York. Jürgen Hartung is the author of numerous articles on data protection and IT law and a sought-after speaker at national and international conferences and seminars.


Books and Legal Commentaries

Datenschutzrecht - Beraten in Privatwirtschaft und öffentlicher Verwaltung, Helbing Lichtenhahn Verlag Zürich 2015, chapter on European data protection, p. 1123

Otto-Schmidt-Verlag Handbuch Cloud Computing [Handbook cloud computing] 2014, chapter on Data Protection, chapter on Secrecy Obligations (in collaboration with Nicholas Storm)

"Social Media im Betrieb - Arbeitsrecht und Compliance“, C.H.BECK Verlag, ed. by Thüsing/Wurth, p. 71  (in collaboration with Isabel Hexel)

IT-Rechts-Handbuch CHBeck 2013, "Cloud Computing in der Insolvenz" [Cloud computing in insolvency], (ín collaboration with Prof. Haarmeyer)

DGRI-Jahrbuch 2012, "Internet der Dinge – Herausforderungen im Datenschutz" [Internet of Things – data protection challenges]

AGB im Wirtschaftsverkehr: Herausforderung und Hürde, Nomos, ed. by Abels/Lieb, "AGB und Einwilligung im Bundesdatenschutzgesetz – ein Überblick und eine Gegenüberstellung" [General business terms and conditions and data protection consent – an overview and comparison]

"Business Laws of Germany", 2010, ed. by Thomas Wegerich, chapter on Data Protection

Telekommunikationsgesetz, Loseblattsammlung, Kohlhammer Verlag, ed. by Wilms/Masing/Jochum, "Kommentierung des Telekommunikations-Datenschutzes" [Annotation of telecommunications data protection],


Articles and Essays

"Rechtliche Herausforderungen bei Social Media in Unternehmen" [Legal challenges of social media in enterprises] Bonner Rechtsjournal 2014, p. 36 (in collaboration with Isabel Hexel/Georg Lecheler)

"Die datenschutzrechtliche Haftung nach der EU-Datenschutzreform" [Data protection liability following the EU Data Protection Reform], (with Dirk Reintzsch), ZWH (Zeitschrift für Wirtschaftsstrafrecht und Haftung im Unternehmen) 2013, p. 129

"Datenschutz und Verschlüsselung" (in colaboration with Oliver Stiemerling), Computer und Recht 2012, p. 60

"Auslagerungen bei Versicherungen" [Insurance outsourcings], VersR 2012, p. 400

"Datenschutz und Lizenzmanagement" [Data protection and licence management] (with Angela Busche), Computer und Recht (CR) dated November 15, 2011, p. 705

"Effektive Service-Level-Kriterien" [Effective service level criteria], (in collaboration with Oliver Stiermerling) , Computer und Recht (CR) 2011, p. 617

"Lizenzmanagement – Datenschutz- und arbeitsrechtliche Grenzen" [Licence management – data protection and the boundaries of employment law], Computer und Recht (CR) 2011, p. 705 (in collaboration with Angela Busche)

"Datenschutz und Insolvenzverwaltung" [Data protection and insolvency administration], Zeitschrift für das gesamte Insolvenzrecht (ZinsO) 2011, p. 1225

"Der Weg zur nächsten Regulierungs-Generation" [Ways to the next-generation regulation], Legal Tribune Online dated June 22, 2011

"Lizenzmanagement - Mitbestimmung und Arbeitnehmerdatenschutz" [Licence management – co-determination rights and employee data protection], BME-Praxisleitfaden Asset- und Lizenzmanagement 2010, p. 46 (in collaboration with Kathrin Vossen)

"Auswirkungen der direkten Kontrolle des PCAOB auf europäische Unternehmen" [Direct supervision by the PCAOB: implications for European entities], Die Wirtschaftsprüfung, special edition 2010, IDW Symposium The Financial Market Crisis and the EU Single Market

"Auswirkungen des Sarbanes-Oxley Act auf deutsche WP-Gesellschaften: Konflikte mit der Verschwiegenheitspflicht der Wirtschaftsprüfer und dem Datenschutzrecht" [Implications of the Sarbanes Oxley Act for German accounting firms with respect to conflicts between their secrecy obligation and data protection laws], Betriebs-Berater 2003, p. 1054 (in collaboration with Dr. Marc Hilber)

"Implications of the Sarbanes Oxley Act for German Accounting Firms with Respect to Data Protection Laws", World Data Protection Report Volume 3, dated May 2003, p. 12 (in collaboration with Dr. Marc Hilber)

"Neue Pflichten für Versandhandel" [New duties for online traders], Handelsblatt dated April 9, 2003

"Planned Changes Regarding Direct Marketing", World Data Protection Report 2003, p. 9

"Datenschutz bei Unternehmenstransaktionen" [Data protection in M&A transactions], Recht der Datenverarbeitung (RDV) 2002, p. 278

"Meilen mit Schutz" [Protected frequent flyer miles], Financial Times Deutschland dated August 6, 2002, p. 34

"Regulatory Authority Informing Consumers about Spamming", World Internet Law Report dated September 2001, p. 8

"Pfandrechte an Telekommunikationslizenzen - taugliche Sicherheit für Kreditgeber?" [Liens on telecommunications licences – a suitable security for creditors?], Kommunikation und Recht (K&R) 2000, p. 533