Tristan Hall
Co-Head of the CMS Insurance Sector Group
Languages
- English
Tristan Hall is a partner in CMS’s Cyber practice and advises businesses on the legal and strategic response to major cyber incidents and data breaches.
Tristan has advised on cyber matters for around a decade. His cyber incident response practice includes major ransomware attacks, data exfiltration, business interruption, regulatory investigations and complex multi-jurisdictional incidents. He regularly acts as breach counsel, helping organisations manage the legal issues arising throughout the lifecycle of a significant cyber incident, from initial response and investigation through to regulatory notifications, contentious regulatory investigations and enforcement action, and subsequent disputes and claims.
Tristan has particular experience advising on incidents involving operations and individuals across multiple jurisdictions, working with CMS cyber and data protection specialists internationally as part of the firm’s global cyber incident response capability.
Separately, Tristan has substantial experience in cyber insurance and regularly advises insurers and insureds on complex cyber coverage issues and claims. His work includes coverage arising from ransomware attacks, data breaches, business interruption, technology failures and cyber incidents affecting critical third-party and outsourced service providers.
Tristan also advises insurers on cyber insurance policy wordings, product development and the design and operation of cyber incident response offerings, including panel and vendor arrangements.
Relevant experience
Lectures list
Education
Tristan Hall is Co-Head of the CMS Insurance Sector Group and has more than 20 years’ experience advising on complex insurance claims and coverage disputes in the UK and internationally.
His insurance practice has a particular focus on financial lines, including Directors’ & Officers’ liability (D&O), Financial Institutions, Professional Indemnity, Crime, Technology E&O and Cyber insurance.
He regularly advises insurers and insureds on high-value, complex and multi-party coverage disputes, including claims with significant regulatory, cross-border and reputational dimensions.
Tristan also acts for professional services firms, directors, financial institutions and other insureds in the defence of significant professional negligence and financial lines claims.
Alongside his contentious practice, Tristan advises insurers on policy wordings, product development and bespoke insurance solutions.
As Co-Head of the CMS Insurance Sector Group, Tristan helps lead the firm’s international insurance practice and works with insurers, brokers and corporate policyholders across the global insurance market.
