Law firms are high-value targets for cybercriminals. Privileged communications, financial records, and years of sensitive client data sit behind credentials that are often less protected than most firms realise.
Cyber security incidents affecting legal practices rarely trace back to a single failure. They develop through a cluster of smaller compliance gaps that accumulate quietly in firms that otherwise operate well.
1. Weak Email Security
Many firms rely on basic spam filtering without layered controls beneath it.
Without proper DMARC, DKIM, and SPF configuration, attackers can spoof a partner's address convincingly enough to redirect a wire transfer or compromise a client matter. The Canadian Centre for Cyber Security pairs that with MFA, internal verification procedures, and phishing simulations.
On access control, their guidance calls for least-privilege permissions, separate admin accounts, unique accounts tied to named individuals, and prompt removal of access when someone leaves.
The Law Society of Ontario’s confidentiality obligations extend to how client data is transmitted – email vulnerabilities put firms on the wrong side of those obligations. A well-configured email environment looks like this:
2. Inconsistent Access Controls
Access controls cover who has access to what. Whether that access is still appropriate, and whether anyone is checking. Common issues include former employees with active credentials, staff with broader access than their role requires, and shared logins that make accountability difficult to establish.
An account that should have been deprovisioned is a clean entry point. A stronger posture includes the following:
3. Limited Security Awareness Training
The 2025 Verizon Data Breach Investigations Report found that over 60% of breaches involved a human element.
One-time onboarding training doesn't account for how attacks have evolved. A staff member who spots a poorly worded phishing email may not recognize a targeted attempt referencing a specific matter or counterparty – attackers research their targets. Effective training:
4. No Defined Incident Response Plan
The response in the first few hours of an incident determines how much damage is done. PIPEDA requires reporting breaches that create a real risk of significant harm to the Office of the Privacy Commissioner and affected individuals as soon as feasible, and the Law Society's professional obligations can require prompt client notice and insurer notification.
Firms without a documented plan tend to miss those windows. But a workable plan:
5. Lack of Ongoing Security Oversight
Day-to-day IT management and security oversight are different functions. Without someone holding a defined security mandate, issues accumulate between incidents rather than being caught proactively.
Unpatched systems, expired certificates, and third-party access that was never removed rarely surface through standard IT support. Good security oversight means:
Most firms reading this will recognize at least one of these gaps. Several will recognize more. Compliance drift happens easily when there's no dedicated security function keeping watch.
At Manawa Networks, we work specifically with Toronto law firms to identify exactly these kinds of vulnerabilities before they become incidents. Our risk assessments look across the areas that matter most:
The question worth asking is whether anyone in your firm currently has the visibility to know where you stand with confidence.
If any of these gaps look familiar, it’s worth getting a clearer picture of where your firm actually stands.
We’re hosting an upcoming webinar – Cybersecurity Compliance for Toronto Law Firms – where we’ll walk through the most common compliance gaps and what good looks like in practice. Details coming soon.
In the meantime, the fastest way to understand your firm’s exposure is a direct conversation.
Book a strategy call with our team and most firms come away with a much clearer picture of their risk in under an hour.
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