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
• Threat Actor Playbook: Conversational Social Engineering in Care Settings
• The Human Risk Layer of AI
• Cybersecurity in the Lab
• Operation Vital Signs: First-of-its-kind exercise stress tests health sector cyber resilience
• What’s in America’s Code?
• Introducing AI Agents to Your Identity Fabric
• Cyberattacks on Healthcare Sector Jumped 14% in First Half of 2026
• What do cybersecurity leaders want in staff? These 3 skills beat certifications and experience
• Continuous attack surface monitoring and sophisticated social engineering assessment
• Hospital Networks are Becoming Targets in Cyberwarfare, and They’re Unequipped to Deal With It