Best Lawyers in Canada for Privacy and Data Security Law
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Brent J. Arnold is a seasoned litigator with over 20 years of experience specializing in cybersecurity, privacy, and commercial litigation. He has appeared before all levels of court in Ontario, including the Supreme Court of Canada, and has been recognized in Best Lawyers™ in Canada and the Lexpert Directory. His expertise lies at the intersection of law and technology, where he provides practical guidance on managing complex litigation, cyber risk and data breach response. Brent is a ...
Lisa is a partner in Torkin Manes’ Business Law Group, specializing in the areas of information technology and business law and is the leader of the firm’s Technology, Privacy & Data Management Group. Lisa has particular expertise in preparing and negotiating technology agreements, including Internet-related, m-commerce and e-commerce agreements, cloud computing agreements (SaaS, PaaS, IasS), cloud retail agreements, cloud storage agreements, app development agreements, hostin...
Mike has been a litigator and dispute resolution lawyer for over 20 years. He has been repeatedly recognized as a leading lawyer and litigation star by peer ranking services including Benchmark, Best Lawyers in Canada, and Lexpert. In 2018 he became a member of the Litigation Counsel of America, an invitation only fellowship of highly experienced lawyers across North America. Mike is a member of the firm’s Strategic Committee. For years Mike has lectured on professionalism and ethics in...
Hélène has over 25 years of market-leading experience in advising many of Canada’s major institutions on managing complex legal and business risks, in respect of cybersecurity, information technology, privacy, and artificial intelligence. Her practice includes breach and incident response, regulatory compliance, and global data and privacy frameworks, as well as the negotiation of complex cross-border technology arrangements and transactions. Hélène excels at...
As a member of the administrative law team, Raymond Doray heads the information law practice and, more particularly, is involved in issues pertaining to access to information, privacy and defamation, as well as the application of the Canadian and Quebec charters of rights and freedoms. He is also specialized in constitutional law. Over the past few years, Mr. Doray has represented many public, private and media organizations before the courts in cases involving the confidentiality of document...
Kateri-Anne Grenier has leading expertise in the areas of commercial litigation, more specifically contracts, construction contracts and liability. Kateri-Anne also has in-depth knowledge of issues related to access to information (federal and provincial law), privacy law and the protection of personal information. She has assisted clients in responding to multi-jurisdictional data breaches involving personal information and employee personal information, including: review of disclosure oblig...
Ayse Gauthier is a top attorney recognized by Best Lawyers in the practice area(s) of Privacy and Data Security Law and Technology Law. Ayse, who practices law in Montréal, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ayse is held by other top lawyers in the same geographic and legal practice area.
Partner, trademark agent and head of Lavery’s Legal Lab on Artificial Intelligence (L3AI) Eric Lavallée is a lawyer and trademark agent in the Business Law Group and he runs the Lavery Legal Lab on Artificial Intelligence (L3AI) . As a result of his extensive experience in intellectual property (patents, trade-marks and software protection) Mr. Lavallée took on a special interest in developments related to artificial intelligence over the past few years. Mr. Lavallé...
Daniel Fabiano is a corporate/commercial lawyer with over two decades of experience advising businesses, non-profit organizations, and government agencies. Daniel brings particular insight to clients working in the public and healthcare sectors, helping them navigate the complex legal and policy frameworks unique to those sectors. Regarded for his pragmatic and innovative approach, Daniel distills complex legal issues into clear, actionable advice that aligns with his client’s goals and...
Daniel is a leading practitioner in the areas of defamation, privacy and media law. Daniel maintains a robust practice focused on defamation and privacy law, with a particular focus on online defamation and breaches of privacy. In addition, Daniel practices in insurance and professional negligence cases. Dan has more than fifteen years of experience advising clients and serves as co-chair of our privacy and data protection group. In this area of practice, Daniel has acted in high profile defa...
Domenic Presta is a technology lawyer based in Toronto. He has over 20 years of experience both in-house as well as in private practice advising clients across all industries on a wide array of technology-related matters. Domenic has extensive experience advising on, structuring, negotiating, and drafting commercial transactions involving information technology, intellectual property, privacy, and regulatory aspects. Domenic assists clients in data security, especially concerning complex IT s...
Alex Cameron is co-leader of the firm’s Privacy and Cybersecurity Group. Clients from all sectors, including numerous Fortune 100 and 500 companies, consistently turn to Alex for his renowned guidance in privacy, cybersecurity and related matters. Clients work closely with Alex to achieve business objectives through the innovative use of personal information, while ensuring compliance and managing risk. From big data projects, to marketing initiatives, to workplace management, Alex help...
Lisa Danay Wallace is a partner in the information technology and intellectual property law practice group at WeirFoulds LLP. She acts for clients when procuring and selling software and technology related services. She works with companies from all industries in order to assist them with their contracting, privacy and other compliance needs. Early in her career, Lisa had hands-on in-house experience with a rapid-growth start-up and a payment network. As the foundation for her career, this ha...
Elyse is a partner with the law firm Rosen Sunshine LLP. Elyse assists health care professionals, health associations and organizations by providing advice and opinions with respect to regulatory, administrative and civil matters. Elyse has experience in assisting various health professionals with professional matters before their licensing bodies (including, registration, complaints, discipline, fitness, and quality assurance), hospitals, employers and the government. Elyse also assists heal...
John Cassell is the Canadian co-head of our cybersecurity and data privacy practice. John assists clients with all manner of privacy and cybersecurity law issues including: responding to complex local and international cybersecurity incidents, advising on risk management strategies, assisting clients with access to information requests, complying with Canada's anti-spam legislation and proceedings before the offices of the Alberta and federal privacy commissioners.
Our Methodology
Recognition by Best Lawyers is based entirely on peer review. Our methodology is designed to capture, as accurately as possible, the consensus opinion of leading lawyers about the professional abilities of their colleagues within the same geographical area and legal practice area.
The Process
Best Lawyers employs a sophisticated, conscientious, rational, and transparent survey process designed to elicit meaningful and substantive evaluations of the quality of legal services. Our belief has always been that the quality of a peer review survey is directly related to the quality of the voters.