+20 years of legal expertise, including 7 years at the CNIL

Odoné the expert selected by
Businesses the most demanding
Odoné, the expertise chosen by
Businesses the most demanding

Executives, lawyers, DPOs and former colleagues of the CNIL testify to the research
The firm's continued excellence, based on rigor, proximity and determination.

“The Odoné firm supported us in our exchanges with the CNIL on complex personal data subjects, specific to the energy sector. Their regulatory expertise and the clarity of their analyses make them a trusted partner on the most sensitive issues.”

Pierfranck Pelacchi
Deputy Director General

“Working with Odoné for several years on particularly sensitive data protection issues in the energy sector, we appreciate their responsiveness and pragmatism. Thanks to their detailed understanding of how the regulator works, they regularly assist us in complex situations, especially in the pre-litigation phase.”

Isabelle Schun
Legal Director

“I worked with Joanna for several years at the CNIL, notably on transport and energy matters. She has a deep and precise understanding of data-protection law and combines strategic vision with pragmatic judgement. She is able to assess complex issues rapidly and provide clear, practical advice.”

Emile Gabrié
Assistant to the Deputy Director - DAJ of the Social Ministries

“Odoné assisted us both in contributing to a CNIL working group and in negotiating a public contract on complex data-protection matters. The firm combines solid expertise with pragmatic, responsive and close support for our teams.”

Tristan Croiset
Co-founder & CTO

“Joanna is a  highly skilled professional, with a deep data-protection expertise and working with her is always a pleasure. I was very pleased to have her as a colleague at the CNIL."

Sabrina Lalaoui
Legal manager - data law and cybersecurity law

“I worked with Joanna at the CNIL on several technically complex cases. She has a strong understanding of security requirements and quickly grasps technical issues. She is pragmatic, efficient and shows excellent judgement in her analyses. Working with her is a real pleasure. I recommend Joanna without hesitation!”

Bao-Khanh Nguyen Trung
Investigator

“I work regularly with Joanna on complex and strategic data matters. She notably assisted us in conducting a mock CNIL inspection, from which we gained valuable insights. Joanna is responsive, dynamic and has an in-depth knowledge of the regulatory framework.”

Yoann Haddad
Digital Legal, Marketing, Personal Data and Contracts Manager

“A highly competent, responsive and pragmatic lawyer who has supported us on a wide range of strategic projects. Joanna adapts smoothly to all types of stakeholders, and her risk-management approach was appreciated by everyone.”

Marion Gauvain
EVP, Group General Counsel

“Joanna is a well-respected expert in data protection. Her strong subject-matter expertise and understanding of how companies operate enable her to balance legal constraints with business imperatives.”

Tiphaine Bessière
Group Data Protection Officer/Third-party risk management/Director

“I regularly work with Me Joanna Masson on matters involving personal data.

Her support has consistently been effective, marked by professionalism, responsiveness and an ability to adapt to each situation.

Her diverse experience and in-depth knowledge of the applicable regulations enable her to offer a pragmatic and rigorous approach.

Working with her is always a pleasure.”

Florence Knafou
Legal Director