Thorsten Ihler | Fieldfisher
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Professional background

Professional background

My main areas of practice
A particular focus is on data protection advice for regulated industries such as financial services, the healthcare sector, telecommunications, online platforms and new technologies.

I have extensive experience as an external Data Protection Officer and in providing ongoing compliance advice as well as project support and handling individual enquiries for US, Asian and European clients.

I represent in proceedings with data protection supervisory authorities. My clients appreciate my pragmatic support when it comes to the implementation of the GDPR, sector-specific requirements, compliance programmes, international data transfers, cybersecurity, data protection incident reporting, the development of data-based products, employee data protection, direct marketing, data protection impact assessments and contract negotiations.

I regularly advise on the overlap with other regulatory areas such as consumer protection, telecommunications law, media regulation and online youth protection.

My clients include consumer electronics manufacturers, social networks, online payment providers, cloud providers, medical device manufacturers, platform operators and international technology companies.

I advise my clients in German and English.

Personal engagement
I am a seasoned external Data Protection Officer (DPO) and have worked in academia and at the Federal Ministry of Justice.

I also conduct data protection training and speak at events and webinars.

Authored pieces

All Resources
Webinar

Implementation of the CER Directive in Germany: What has changed and how can Companies prepare for the KRITIS Dachgesetz?

20.05.2026
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A digital illustration of a globe with neon blue lines and rings, overlaying a dark background with financial graphs and data. The image evokes a sense of global connectivity and financial markets.
Press Release

Fieldfisher advises Incap on the strategic acquisition of Lacon Group

04.12.2025
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A digital graphic of a password entry field is depicted on a colorful background with circuit board patterns. The field shows three asterisks and two dashes, indicating a partially entered password. The background colors are shades of purple and pink.
Data and Privacy
Insight

What rights do data subjects have under the AI Act and are they different from the GDPR?

29.10.2024
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A digital illustration of interconnected lines and nodes in a network-like structure. The lines are mainly blue and purple, and the nodes glow with varying intensities, creating a vibrant web against a dark background, evoking themes of connectivity and technology.
Webinar

Webinar: Assessing "high risk AI systems" under the EU AI Act

14.03.2024
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Press Release

Fieldfisher advises Sonova Retail Deutschland GmbH on the acquisition of Essen-based Hörsysteme Ansgar Wessling GmbH

07.02.2024
Sonova Retail Deutschland GmbH, part of the Swiss Sonova Group, a leading global provider of innovative hearing solutions, has made a strategic acquisition with the complete takeover of Hörsysteme Ansgar Wessling GmbH from Essen. Sonova received comprehensive legal advice on the transaction from a Fieldfisher team led by Partner Jan Hartmann and Counsel Slaven Kovacevic .
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