Critical infrastructure depends on interconnected operational systems, where cyber incidents can disrupt essential services, safety, and availability.
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Critical infrastructure includes systems and assets vital for public health, safety, and economic stability, such as power grids, water treatment, transportation networks, and healthcare facilities. These systems often combine physical components with industrial control systems (ICS) and operational technology (OT) that manage essential services in real time.
From an information-security perspective, critical infrastructure faces risks like unauthorized access to control systems, disruption of service availability, and manipulation of sensor data. Defending these assets requires specialized security measures tailored to ICS environments, including network segmentation, strict access controls, and continuous monitoring for anomalies. Ensuring resilience also involves coordinated efforts between operators and government agencies to address vulnerabilities unique to legacy systems and proprietary protocols.
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While cyberattacks against hospitals and clinics grew modestly in the first half of 2026, attacks on service providers and other healthcare businesses more than doubled.
SonicWall records 264,000 events in first five months of 2026 as UK hospitals come under siege
Jeffrey Vinson, Ex-Harris Health Cyber Leader, on Sector's Top ChallengesHealthcare organizations have improved cyberthreat sharing, yet security gaps persist. Jeffrey Vinson, former cyber leader of Harris Health System, explains why ransomware, weak investment and limited rural resources continue to expose patient data and safety to growing cyber risks.
Recent Hacks Underscore Persistent and Growing Threats to Smaller OrganizationsSmall and mid-sized healthcare organizations - including medical specialty practices and regional clinics - continue to fall victim disproportionately to hacking incidents, including ransomware attacks and data thefts - affecting large populations of patients. Why does this keep happening?