Cybersecurity threats across the global health ecosystem intensified during 2025 as digital transformation expanded across clinical, administrative and medical technology environments. Increasing adoption of telehealth platforms, connected medical devices and digital services broadened the attack surface for healthcare delivery organisations, manufacturers and health technology providers. At the same time, geopolitical tensions, physical security risks and supply chain vulnerabilities created additional complexity for healthcare leaders responsible for maintaining operational continuity and patient safety. Ransomware activity, sophisticated social engineering techniques and third-party compromises remained central concerns for cybersecurity professionals, reinforcing the need for coordinated defence strategies, improved resilience planning and stronger collaboration across the health sector.
Ransomware And Supply Chain Threats Escalate
Ransomware remained the most significant cybersecurity threat facing the health sector in 2025, with multiple threat groups targeting healthcare organisations worldwide. Activity from groups such as Qilin, INC Ransom and SAFEPAY increased substantially, contributing to hundreds of ransomware incidents across the sector. Qilin demonstrated particularly strong growth in activity compared with the previous year, while newer groups such as SAFEPAY and Sinobi rapidly expanded operations against healthcare targets.
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Supply chain exploitation emerged as a defining trend in cyber incidents affecting healthcare organisations. Attacks increasingly targeted vendors providing services such as medical billing, software platforms and managed file transfer solutions. A ransomware-driven breach involving a risk adjustment services provider exposed data from more than five million individuals and demonstrated how vulnerabilities in a single vendor can cascade across multiple healthcare organisations. Similarly, exploitation of vulnerabilities in managed file transfer software enabled attackers to compromise many organisations through a single campaign.
Data breaches, phishing attacks, third-party partner compromises and zero-day vulnerabilities remained among the most significant cybersecurity concerns identified by health sector executives and security professionals. Smaller organisations with limited cybersecurity budgets reported greater concern about phishing, while larger organisations were more focused on ransomware deployments. These patterns reflected differences in defensive capabilities and resource allocation across the sector.
Expanding Attack Techniques and Infrastructure Risks
Threat actors continued to refine attack methodologies, increasingly relying on social engineering and credential theft to bypass traditional security controls. Campaigns such as ClickFix and FileFix used deceptive techniques that imitated technical issues or software updates to trick users into executing malicious commands. These methods enabled attackers to deploy malware, steal credentials and gain unauthorised access to healthcare systems.
QR code phishing also emerged as a growing threat, exploiting the widespread use of QR codes in healthcare services such as patient portals and laboratory communications. Because these interactions often occur on personal mobile devices without enterprise security protections, successful attacks can result in credential theft, data breaches and ransomware deployment.
Medical device cybersecurity remained a persistent concern. Vulnerabilities identified in patient monitoring equipment demonstrated the risks associated with insecure device design and network exposure. Legacy medical devices posed additional challenges, as many remain in use long after their operating systems reach end-of-life status. Devices running unsupported software increase the likelihood of unpatched vulnerabilities, requiring healthcare organisations to rely on compensating controls such as network segmentation, monitoring and firmware updates where available.
Imaging infrastructure also presented cybersecurity exposure. Vulnerabilities affecting DICOM and Picture Archiving and Communication Systems expanded risk beyond radiology into dental, ophthalmic and pathology workflows. Smaller clinics and private practices were particularly vulnerable due to limited cybersecurity staffing and resources.
Malware activity observed across the health sector included remote access trojans, credential-harvesting malware and malicious loaders designed to establish initial access. These tools enabled attackers to exfiltrate data, deploy additional malware and maintain persistent access to compromised systems.
Geopolitical And Operational Security Pressures
Cybersecurity risks in healthcare were increasingly shaped by geopolitical developments and physical security concerns. Nation-state activity included remote IT worker fraud campaigns designed to generate revenue for weapons programmes, as well as hybrid warfare tactics combining cybercriminal activity with geopolitical objectives. During a regional conflict in 2025, hacktivist groups targeted healthcare infrastructure as part of broader campaigns against national critical infrastructure.
Physical security risks also gained attention across healthcare organisations. Workplace violence remained a concern, with healthcare workers experiencing high rates of violence compared with other industries. Legislative initiatives and organisational policies sought to improve protections for healthcare staff and executives.
Natural disasters and public health events contributed additional operational challenges. Major wildfire activity in North America, severe typhoon damage in Southeast Asia and multiple infectious disease outbreaks, including Chikungunya resurgence and measles cases, highlighted the importance of resilience planning across healthcare systems.
The impact of technology failures on healthcare operations reinforced the need for stronger resilience strategies. A software update failure in 2024 disrupted hundreds of hospitals and affected patient care delivery, prompting many organisations to reassess recovery planning, supply chain risk management and data backup policies. Electronic health records, telehealth services and patient-facing applications were among the most affected systems during these disruptions.
Survey findings indicated that most organisations reviewed their business resilience strategies following major disruptions, with many focusing on recovery planning and operational continuity. Confidence in maintaining operations during similar incidents varied significantly across organisations, reflecting ongoing challenges in preparedness.
Cybersecurity risks facing the health sector continue to grow in scale and complexity as digital transformation accelerates across healthcare delivery, medical technology and administrative systems. Ransomware activity, supply chain vulnerabilities, social engineering attacks and legacy device risks remain persistent challenges, while geopolitical developments and operational disruptions add further pressure to healthcare security strategies. Strengthening business resilience, improving third-party risk management and fostering collaboration across the health ecosystem will be essential to protecting patient safety, safeguarding sensitive data and maintaining continuity of care in an increasingly interconnected environment.
Source: Health-ISAC
Image Credit: iStock
