LAWYER PROFILE

Günther Leissler

Europe 2026

Schoenherr

Ranked in 1 practice area

TMT: Data Protection

Austria

2 years ranked

About

Provided by Schoenherr

Practice Areas

data protection, administrative & public law, it & technology law

Career

Günther Leissler has been with Schoenherr since 2006. He is a member of the firm's new technology hub and the head of the firm's data protection & privacy group. His practice focuses on regulatory issues, where he specialises in privacy, telecommunications and life sciences. He frequently advises Schoenherr's clients on corporate data protection matters such as the implementation of global database projects, and he represents them in the required regulatory approval and registration proceedings. He also gives frequent advice on the implementation of web-based telecommunication services and on cross-border projects such as the implementation of whistleblowing systems or intra-group databases.

Professional Memberships

Frequently opines on privacy draft legislation on behalf of the ABA

Publications

Author of various publications in data protection and privacy law. Günther also lectures in the areas of data protection and privacy law.

Personal

University of Vienna, Vienna/Austria (Dr. iur. 2006)

University of Vienna, Vienna/Austria (LL.M. 2002)

University of Vienna, Vienna/Austria (Mag. iur. 1997)

Chambers Review

Provided by Chambers

Chambers European Guide

TMT: Data Protection - Austria

Band 1

Individual Editorial

Günther Leissler frequently advises clients on contentious and non-contentious data protection matters, including compliance and governance issues, interactions with data protection regulators and claims concerning GDPR breaches.

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Strengths

Provided by Chambers

Günther Leissler is a brilliant data protection expert. He has a very good reputation in this field.
TMT: Data ProtectionChambers European Guide
Günther Leissler is an outstanding privacy lawyer who brings to bear deep legal knowledge with commerciality, pragmatism and an understanding of how to calibrate risk.
TMT: Data ProtectionChambers European Guide
Günther Leissler is the best data protection lawyer.
TMT: Data ProtectionChambers European Guide
Günther Leissler is a wonderful, commercially minded and pragmatic lawyer.
TMT: Data ProtectionChambers European Guide