Atty. John Cassell
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.
Privacy and Data Security Law & More Attorney · Serving Calgary, AB
Profile Summary
About John Cassell at a Glance
John Cassell is a securities and internet attorney based in Calgary, Alberta, practicing at Norton Rose Fulbright Canada LLP. Recognitions include Best Lawyers in America — Privacy and Data Security Law (2026) and Best Lawyers in America — Technology Law (2026). Serves clients in Calgary, AB and the surrounding metropolitan area.
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About John Cassell
- 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
Practice Areas Explained
John Cassell's Areas of Legal Practice
Each practice area below reflects the types of cases John Cassell handles, with a practical overview of what that area of law involves and how it may apply to your situation in Calgary.
Securities Law in Calgary
John Cassell is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Alberta →
Internet & Cyber Law in Calgary
Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.
John Cassell is one of 17,826 internet attorneys indexed nationally. Browse internet attorneys in Alberta →
Jurisdictional Context
Why Local Counsel Matters in Calgary
Practicing law in Alberta. Legal matters in Alberta are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Calgary are typically filed in the local municipal court or the appropriate Alberta state district court, depending on subject matter and amount in controversy. An attorney licensed in Alberta brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Alberta courts without local counsel or pro hac vice admission.
Calgary Courts and Legal Process
Choosing a Calgary-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Alberta attorneys? Browse all attorneys in Calgary or all attorneys in Alberta.
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Professional Profile
Why Clients in Calgary Choose John Cassell
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish John Cassell's practice in the field of securities and internet.
Broad Practice Area Coverage
Covering securities and internet, John Cassell can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Calgary
A Calgary-based practice means John Cassell attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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John Cassell's Practice Areas & Specializations
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