Health-ISAC Health Sector Heartbeat – Q2 2026

Health-ISAC’s 2026 Second Quarter (Q2) Health Sector Heartbeat

This quarterly report provides observations of ransomware, cybercrime trends, and malicious actor forum postings that could potentially impact health sector organizations. This product is for situational awareness, and Health-ISAC recommends that members affiliated with the victim companies or those potentially affected take appropriate measures to secure critical infrastructure.

This report includes:

• Ransomware Attacks in the Health Sector
• Targeted Alert Trends
• Underground Forums Activity
• Threat Actor Profile: World Leaks
• Mitigation Strategies

• Related Resources & News
• Health-ISAC on Health Stealth Radio – Cross-Industry Collaboration
• Urgent Threat Alert: ShinyHunters Vishing Campaigns and Domain Impersonation
• When Everyone Can Find Your Bugs: Medical Device Security After AI
• AI Agents Are Changing Ransomware Attacks on Healthcare Organizations
• From Metrics to Meaning: Transforming Medical Device Cybersecurity into a Strategic Risk Narrative
• The Prioritization Problem: Why More Findings Don’t Mean Less Risk
• Monthly Newsletter – September 2026
• Health-ISAC ® Invests in APAC with Key Staff Addition in Australia
• Kidney Transplant Registry Hack Raises Safety Concerns
• Health-ISAC Hacking Healthcare 8-26-2026