Cyber

Cyber

At Fenecas Law LLP, we advise and represent clients in the increasingly complex area of contentious cyber disputes. As businesses become ever more reliant on digital platforms, data, and interconnected infrastructure, cyber incidents are no longer rare events—they are a central commercial risk. When disputes or investigations arise, they can have immediate financial, regulatory, and reputational consequences.

Our contentious cyber practice is focused on litigation, regulatory enforcement, and crisis management arising from cyber security events, data breaches, and digital commercial disputes. We represent companies, executives, and institutions across sectors including technology, financial services, retail, professional services, and healthcare.

Cyber Disputes We Handle

Cyber disputes are rarely straightforward—they often involve multiple jurisdictions, fast moving regulatory obligations, and sensitive evidence such as network logs, digital forensics, and confidential commercial data. We act in disputes such as:

  • Data breach litigation – Acting for organisations facing claims from customers, employees, or counterparties after a cyber incident.
  • Regulatory investigations – Representing businesses responding to enforcement by the Data Protection Commission (DPC) or EU regulatory bodies following alleged GDPR breaches.
  • Contractual cyber disputes – Litigation arising from IT service agreements, managed service contracts, or cloud hosting failures leading to system downtime or breach.
  • Supply chain cyber risk – Claims and indemnity disputes between businesses following ransomware or business email compromise.
  • Cyber fraud and financial loss – Recovery actions where funds are diverted through phishing or hacking attacks, including urgent freezing orders.
  • Insurance disputes – Contentious claims under cyber insurance policies, including coverage scope and insurer liability.
  • Intellectual property disputes – Misuse or theft of proprietary digital assets, trade secrets, or software code.
  • Defamation and reputational matters – Addressing online publication of false or damaging material, often linked with cyber breaches.


We understand the legal and technical interplay in these claims and work with forensics experts, cybersecurity consultants, and specialist barristers to deliver a strong, evidence driven case.

Litigation and Regulatory Proceedings

When cyber matters become contentious, urgent and decisive action can prevent greater harm. Our litigation services include:

  • Urgent court applications – Injunctions to freeze stolen funds, restrain unlawful publication, or secure critical digital evidence.
  • High Court litigation – Acting in complex data breach claims and contractual IT disputes.
  • Regulatory defence – Advising on investigations brought by the Data Protection Commission, the Central Bank (in regulated sectors), and EU supervisory authorities.
  • Appeals and challenges – Contesting administrative fines, enforcement notices, or regulatory determinations.
  • Cross border disputes – Coordinating with international counsel on multi jurisdictional cyber matters governed by EU and international law.


We deliver strategic, cost effective solutions while ensuring clients remain compliant with their statutory obligations.

Incident Response & Crisis Management

Cyber incidents demand not only legal strategy but also clear, rapid decision making. We provide contentious advisory support during live cyber crises, including:

  • GDPR notification issues – Advising on breach reporting obligations to the Data Protection Commission and affected individuals.
  • Litigation risk management – Preparing for possible group litigation or class action style claims.
  • Regulatory position – Shaping communications with regulators to minimise sanctions.
  • Privilege and confidentiality – Protecting sensitive forensic reports and communications in the context of potential litigation.
  • Board level advice – Supporting directors in demonstrating compliance with duties of governance and oversight.


Our role is to reduce exposure at the most critical moments, while positioning clients strongly should disputes follow.

Acting for Businesses and Institutions

We act for companies across many sectors, where the impact of a cyber dispute may involve:

  • System downtime affecting trading or client services.
  • Regulatory fines and adverse findings.
  • Claims from shareholders, customers, or counterparties.
  • Significant reputational consequences.


We tailor our representation to the client’s strategic needs: some require aggressive litigation to recover losses or defend claims, while others prioritise confidentiality, settlement, and reputation management.

Acting for Insurers and Policyholders

Cyber insurance is now a standard feature of commercial risk management, but coverage disputes are increasingly common. We provide contentious advice including:

  • Acting for insurers in defending high value cyber claims.
  • Acting for policyholders challenging coverage denials.
  • Advising on notification issues, exclusions, and aggregation of losses.
  • Litigating disputes where cyber incidents intersect with professional indemnity or D&O coverage.


Understanding both insurer and policyholder perspectives enables us to anticipate arguments and secure practical outcomes.

Why Choose Fenecas Law LLP?

  • Litigation strength – Experienced in High Court cyber and data litigation, urgent injunctions, and multi party disputes.
  • Technical understanding – Working closely with cybersecurity experts to underpin strong claims and defences.
  • Cross disciplinary knowledge – Combining commercial litigation, regulatory enforcement, contract law, and data protection expertise.
  • Speed and focus – Rapid mobilisation in crisis situations, ensuring urgent deadlines (e.g., GDPR 72 hour reporting) are met.
  • Commercial insight – Strategies aligned with brand protection, customer trust, and long term business viability.

Contact Us

If your organisation is facing a cyber dispute, investigation, or litigation, early and informed action is vital. Contact Fenecas Law LLP for clear, strategic advice and decisive representation in contentious cyber matters across Ireland.