The Urgent Need for Hypervisor Security in Healthcare

In today’s digitized healthcare landscape, virtualization technology allows healthcare organizations to consolidate infrastructure, streamline IT management, strengthen security and regulatory compliance, and ultimately improve patient care. However, it also expands the attack surface. Healthcare providers rely on virtualized environments to manage sensitive patient data. As a result, hypervisors have become a prime target. 

Hypervisors underpin essential healthcare systems. These include EHRs, telemedicine platforms, medical imaging, and IoT device management. As the layer responsible for managing virtual machines (VMs), hypervisors are uniquely positioned to control the systems that sustain patient care. Yet many healthcare hypervisors remain underprotected. That makes them high-value targets for ransomware groups like Scattered Spider, BlackCat, and Qilin. Safeguarding hypervisors is a cybersecurity priority. It is also essential for patient safety and continuity of care. 

Why the healthcare sector?

Healthcare organizations handle highly sensitive data, a blaring factor in their attractiveness to cybercriminals. After gaining access to an exposed hypervisor, threat actors can easily take down the entire virtualized environment of a hospital by spreading ransomware to all managed VMs containing sensitive data. Beyond data sensitivity, attackers expect high payouts. In recent years, ransomware has continued to disproportionately impact healthcare organizations due to the operational urgency of restoring systems. Industry reporting shows that healthcare remains one of the most targeted sectors, with ransomware incidents recorded across both providers and the broader healthcare ecosystem. In 2025 alone, over 460 ransomware incidents were reported across the U.S. healthcare sector, underscoring the scale and persistence of these attacks.  

Attackers are also evolving their approach. Rather than focusing solely on hospitals, cybercriminals are increasingly targeting healthcare vendors, billing providers, and technology partners, using them as entry points to reach multiple organizations at once. Attacks on these healthcare businesses increased by approximately 30% in 2025, expanding the blast radius of single compromises.  

This shift reflects a broader trend: attackers are no longer just pursuing data—they are targeting the operational systems that healthcare depends on. 

The scope

The prevalence of ransomware attacks in healthcare is staggering. In 2025, healthcare accounted for 17% of all ransomware attacks across industries. At the same time, ransomware activity remains consistently high. In the first quarter of 2026 alone, researchers recorded 120 ransomware attacks targeting healthcare providers and an additional 81 attacks on healthcare-related businesses, demonstrating that both providers and their supporting ecosystems remain under sustained pressure. This surge in attacks draws attention to the vulnerabilities within the healthcare sector, with recent incidents exposing the far-reaching impacts on patient data.  

In February of 2024, Change Healthcare faced the largest cyberattack in U.S. healthcare history as of 2026. The attack was attributed to BlackCat, which is known for targeting ESXi and virtualized environments. It exposed sensitive data from approximately 192.7 million individuals, reaching nearly a third of the nation’s healthcare interactions. This incident broadcasted the severe vulnerability of healthcare institutions, and the risks cyberattacks pose, from disruptions in pharmacy and claims processing to delays in medical services.  

The financial and operational fallout from incidents like these is profound.

Healthcare continues to experience the highest cost of cyber incidents of any industry. According to the latest findings, the average cost of a healthcare data breach was $7.42 million in 2025, remaining the highest across all sectors. Compounding this impact is the time required to respond. Healthcare breaches take significantly longer than other industries to identify and contain, averaging 279 days, giving attackers extended access to systems and increasing operational disruption. Yet, the most severe impact of these breaches is felt in nearby facilities and in the quality of individual patient care.  

When ransomware paralyzes a facility’s virtual infrastructure, patients seek care elsewhere. Neighboring hospitals absorb the surge. Care quality can decline for everyone. A recent study examined the effects of ransomware on healthcare systems and reported the dire consequences of how these attacks cascade through the broader healthcare network. In this study, stroke activations surged by nearly 75%, while confirmed stroke cases more than doubled. Cardiac arrest incidents rose by 81%, yet the survival rate for out-of-hospital cardiac arrests plummeted from 40% pre-ransomware attack to just 4.5%. Unaffected hospitals faced prolonged wait times, higher numbers of patients leaving without being seen, and longer stays. The threat of hypervisor ransomware in healthcare is evidently more than technical—it’s a real threat to life.  

Next steps

These scenarios highlight a growing gap between how healthcare environments are secured and how modern attacks operate. Hypervisor attacks in healthcare do more than expose data—they can disrupt entire virtualized environments, directly impacting care delivery. The path forward demands a shift in mindset.  

Healthcare providers must prioritize preemptive hypervisor security as a core component of patient care. By shifting toward preemptive security controls at the hypervisor layer, healthcare organizations can prevent unauthorized execution, reduce the risk of ransomware spread, and maintain system integrity across their virtual environments.

ZeroLock, the only Broadcom certified hypervisor security solution, offers healthcare organizations tools to monitor and respond to threats before they escalate. ZeroLock’s features, including AI detection, ransomware detection, automated rollback capabilities, and virtual patching, address these challenges head-on. This approach helps healthcare providers ensure that critical systems remain operational and that patient data stays secure. 

A preemptive approach to hypervisor security goes beyond protecting data; it’s about preserving patient safety and maintaining trust in an era where health and technology are inextricably linked. By adopting dedicated tools to defend hypervisors, healthcare organizations can take decisive steps to reduce cyber risks, safeguard patient care, and strengthen the integrity of healthcare as it becomes increasingly reliant on virtual infrastructure. 

Customer Story

Healthcare organizations are already taking steps to improve resilience. In one recent example, preemptive hypervisor security helped significantly reduce operational risk. 

Read the full healthcare case study