Cybersecurity Strategies for Healthcare (Canada): Prevent Attacks Now

Healthcare is a prime target for cybercriminals because downtime directly affects patient care. In 2024, Toronto hospitals had to cancel thousands of appointments after a ransomware attack on a major pathology provider, highlighting how supplier compromise can disrupt essential clinical services.

Throughout the sector, ransomware remains widespread. Two-thirds (67%) of healthcare organizations reported being hit in 2024, and the average recovery costs have been rising steadily. Meanwhile, Canadian breach costs averaged CAD $9.77 million in 2024, increasing the stakes for boards and regulators.

Why this matters now

• Threat level: The Canadian Centre for Cyber Security continues to warn that ransomware is the most immediate cyber threat to Canada’s critical infrastructure, including healthcare.

• Regulatory pressure: All organizations accessing Canadian patient data must comply with the Data Security and Protection Toolkit (DSPT), aligning increasingly with the Canadian Centre for Cyber Security’s Cyber Assessment Framework (CAF).

• Third-party risk: Recent incidents show why supplier assurance and segmentation are critical.

• Cross-border operations: Providers dealing with cross-border data or operations must account for the NIS2 obligations now in force within EU Member States.

A practical framework: prevent, detect, respond, recover

1) Prevent: reduce the attack surface

• Baseline controls aligned to Canadian Centre for Cyber Security CAF. Start with governance (GOV), identify and protect (IDP), detect (DE), and minimize impact (MIM). Use CAF outcomes as your control catalogue and audit checklist.
  
  

• Harden identity. Enforce phishing-resistant MFA for clinicians and administrators; block legacy authentication; implement privileged access with just-in-time elevation.
  
  

• Patch the right things first. Operate a risk-based vulnerability program focusing on internet-facing and patient-safety-critical systems; verify compensating controls when patching is constrained by medical device approvals.
  
  

• Email and endpoint protection. Modern EDR/XDR with automated isolation; sandbox inbound attachments; DMARC enforcement for healthcare and supplier domains.
  
  

• Network segmentation. Separate clinical devices, pathology, imaging, and admin networks; implement secure remote access for vendors; use application allow-listing on critical hosts.
  
  

• Supplier assurance. Mandate DSPT (and when appropriate Cyber Essentials Plus) for suppliers managing patient data; require evidence of offline backup and incident runbooks.

2) Detect: shorten time-to-know

• 24×7 monitoring. Route logs to a SOC with healthcare-specific use cases (e.g., abnormal PACS access, lab system data exfiltration).
  
  

• Threat intel + anomaly detection. Monitor for credential-stuffing and exploitation of widely targeted vulnerabilities affecting healthcare stacks.
  
  

• Tabletop-driven detections. After every exercise, add detections for the techniques you rehearsed (e.g., privileged escalation via domain controller replication).

3) Respond: rehearse before you need it

• Incident Response (IR) playbooks. Maintain playbooks for ransomware, email compromise, and third-party outage. Include patient safety escalation paths and diversion procedures.
  
  

• Decision authority. Pre-agree who can isolate clinical domains, shut down interfaces, or fail over to manual processes.
  
  

• Communication. Prepare plain-language communications for patients, regulators, and staff; guidance emphasizes clarity and timeliness.

4) Recover: resilience that works on bad days

• Backups you can restore. Maintain immutable, offline copies; test restore times for EPR, LIMS, PACS, and core imaging; verify bare-metal recovery for critical servers.
  
  

• Service continuity. Prioritize restoration based on clinical risk. Pre-stage “minimum viable service” runbooks for maternity, emergency, and pathology.
  
  

• Lessons learned. After action reviews must feed DSPT evidence and CAF outcome improvements.

Controls that pay for themselves

• Identity modernisation reduces credential-based ransomware—the joint top entry vector in healthcare in 2024.
  
  

• EDR with isolation limits lateral movement and reduces mean time to recover, a major cost driver noted across sector reports.
  
  

• Supply-chain due diligence and contract clauses for security and continuity directly mitigate third-party impacts seen in 2024.
  
  

• Board-level metrics: MFA coverage, patching SLAs for internet-facing CVEs, backup restore success rate, and exercise frequency.
  
  

• Cost context: Healthcare’s average breach cost in 2024 was CAD $9.77m internationally, while the Canadian cross-industry average was £3.58m—use these figures to prioritize investment and justify resilience budgets.

Mapping Canadian frameworks (quick guide)

• Canadian Centre for Cyber Security CAF → Your program. Use CAF outcomes as headings in your cyber roadmap; assign executive owners per outcome and track quarterly. Canadian Centre for Cyber Security

• DSPT → Evidence. Store policies, risk assessments, test results, and supplier attestations in a single evidence pack for DSPT publication deadlines. Health Canada

• Cyber strategy 2023–2030. Align to the vision of a cyber-resilient health and care system; emphasize a culture of security, collaboration, and data-driven decisions. Government of Canada

• HICP 405(d) (US reference). Valuable, especially for multinationals, as a practical control set focused on patient safety. 405d.hhs.gov+1

90-day action plan

Days 0–30: measure and stabilize

• Conduct a CAF-aligned health check; close critical external exposures; enforce MFA; restrict high-risk legacy protocols. Canadian Centre for Cyber Security

Days 31–60: harden and prepare

• Segment clinical networks; deploy EDR; complete IR playbooks; contractually require DSPT/Cyber Essentials Plus from key suppliers. Health Canada

Days 61–90: prove resilience

• Conduct full ransomware tabletop with executives; test restores for EPR/LIMS/PACS; publish DSPT updates and remediation evidence. Health Canada

Summary & next steps

Cyberattacks pose a clinical safety risk as much as an IT problem. Through CAF-aligned controls, DSPT evidence, rehearsed incident response, and supplier assurance, healthcare providers can minimize both the likelihood and impact of threats and recover more swiftly from incidents. For tailored planning workshops and implementation support, contact Generation Digital.

FAQ

Q1. What are the main cybersecurity threats in healthcare?
Ransomware, business email compromise, and third-party compromise (supplier attacks) are most disruptive, with ransomware highlighted as the most immediate threat to Canada's critical infrastructure. Reuters

Q2. How can Canadian healthcare providers improve cybersecurity quickly?
Enforce MFA, patch internet-facing systems, deploy EDR with isolation, segment clinical networks, test restores, and publish DSPT evidence mapped to the Canadian Centre for Cyber Security CAF. Canadian Centre for Cyber Security

Q3. Why is resilience so important?
Because disruption impacts patient services. The 2024 attack on an essential supplier shows how a single incident can cancel elective care across multiple hospitals—resilience planning is key to limiting that impact. Health Canada