
Advokatfirmaet Thommessen AS is is well placed to advise on national security compliance, including aspects within transactions and due diligence processes. Department head Hedvig Moe‘s far-reaching practice spans compliance, cybersecurity, and sanctions. Snorre Valdimarsson has been active in compliance due diligence in relation to transactions and due diligence assessments, while Christopher Sparre-Enger Clausen takes point on matters relating to cybersecurity and GDPR.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- ‘Hedvig Moe has a lot of "know-how" about the security area, and gives clear and practical advice.’
- ‘Thommessen provides a wide spectrum of services relevant for industry- and business leaders in support of their navigation through complicated regulatory, geopolitical, and legal "waters".’
- ‘Politeness, knowledge, ability to see beyond their own expertise and involve relevant assets to provide their clients with the best piece of advice.’
- ‘Diverse experience and deep expertise in security and compliance. Broad and insightful perspective to complex challenges, grounded in a solid understanding of regulatory frameworks and risk management.’
- ‘Hedvig Moe stands out due to her diverse experience and deep expertise in security and compliance. She brings a broad and insightful perspective to complex challenges, grounded in a solid understanding of regulatory frameworks and risk management.’
- ‘Thommessen’s team stands out for its deep understanding of real-world operational and legal challenges. The team excels at translating complex and often evolving regulatory requirements into practical, actionable solutions that can be realistically implemented. This ability to bridge legal frameworks with business realities is a key differentiator. Their advice is not only legally sound but also tailored to fit within the constraints and demands of day-to-day operations. I have enjoyed the collaboration, openness to knowledge-sharing, and a thoughtful approach to client engagement.’
Key clients
- Arctic Securities AS
- Kahoot! AS
- NORMA Cyber
- Tono
- Microsoft
- Danske Bank
- Bolt Operations Oy
- The Norwegian Shipowners Mutual War Risk Insurance Association (DNK)
- Gard
- Norwegian Hull Club
- Scatec ASA
- Release Solar AS
Work highlights
Assisted Kongsberg Defence & Aerospace AS on their initiative to open a new permanent office in Kyiv, Ukraine, to share expertise and know-how with Ukrainian industry players to help save lives and protect critical infrastructure in Ukraine.
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head
Hedvig Moe
Other key lawyers
Snorre Valdimarsson; Christopher Sparre-Enger Clausen
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