States » SouthPosted at: Nov 14 2026 6:25PM


Cyberattacks on operational technology spread to smaller establishments; hospitals, cold-storage units increasingly vulnerable

Thiruvananthapuram, Nov 14 (UNI) Cybersecurity threats targeting Operational Technology (OT) are no longer confined to large industries and critical infrastructure, with smaller establishments, including hospitals, supermarkets, pharmaceutical units, cold-storage facilities and municipal utilities, emerging as potential targets.
The shift calls for a fundamental reorientation of industrial cybersecurity, with protection extending to every connected physical process rather than being restricted to organisations classified as critical infrastructure, cybersecurity specialist K. S. Manoj has observed.
Unlike conventional cyberattacks targeting information systems and digital services, intrusions into OT networks can have direct physical consequences, disrupting production, interrupting essential supplies, damaging equipment and compromising temperature-sensitive storage.
Modern industrial and public utility operations increasingly depend on Programmable Logic Controllers (PLCs), Supervisory Control and Data Acquisition (SCADA) systems, sensors, pumps, motors, compressors and refrigeration controllers. Any compromise of these systems could affect the functioning of essential facilities and, in certain circumstances, threaten public safety.
Reports from France of cyberattacks affecting supermarket refrigeration systems, resulting in temperature increases and food spoilage, highlight the emerging risks. There have also been reports of possible implications for blood-bank facilities, though the precise technical methods behind the incidents have not been publicly established.
The vulnerability is particularly concerning because many smaller establishments depend heavily on connected control systems but lack specialised cybersecurity personnel and adequate monitoring infrastructure.
Weak passwords, outdated firmware, unsecured remote-access facilities, compromised vendor credentials and poor separation between corporate IT networks and industrial control systems could provide attackers with opportunities to penetrate OT environments.
Manoj identified three major changes necessary in the approach to OT security.
First, protection should be based on the potential consequences of an attack rather than the size of the organisation. A small hospital, blood bank or water-treatment facility could provide an indispensable service to an entire community.
Second, cybersecurity must extend beyond preventing unauthorised access to ensuring the safety and continuity of physical operations even when digital defences fail. Independent safety mechanisms, reliable alarms, secure configurations and tested recovery procedures are therefore essential.
Third, security must encompass the entire operational ecosystem, including equipment manufacturers, maintenance contractors, cloud platforms and third-party remote-access services, as vulnerabilities in any of these connections could expose industrial networks.
The issue is particularly relevant to India, where hospitals, pharmaceutical facilities, food-processing units, cold-storage centres, small factories and municipal utilities are increasingly adopting digitally controlled operations.
A fundamental safeguard is to ensure that corporate IT networks do not become unrestricted entry points into industrial control networks. Strong IT-OT segregation, industrial firewalls, network segmentation, multi-factor authentication and tightly controlled third-party access are among the essential measures.
Standards such as IEC 62443 provide an established framework for securing industrial automation and control systems. India's preparedness should also incorporate stronger protection for smaller OT-dependent establishments alongside existing cybersecurity initiatives, including CERT-In guidance and the Central Electricity Authority's cybersecurity guidelines.
Emerging technologies such as Artificial Intelligence can improve anomaly detection, while Digital Twins can help organisations identify and assess operational vulnerabilities. However, these tools must supplement established engineering practices, secure system architecture and effective physical safety mechanisms.
The central consideration in the evolving cybersecurity landscape should be the potential impact of disrupting a physical process, rather than the size or classification of the organisation operating it.
The consequences of compromising a small connected system could extend well beyond financial losses, affecting public health, food safety and the continuity of essential services.
"Small OT systems are not small risks," Manoj said, stressing the need to bring every connected physical process within the framework of cybersecurity preparedness and national resilience.
UNI DS
Tags: #Cyberattacks on operational technology spread to smaller establishments; hospitals# cold-storage units increasingly vulnerable
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