Energy, Oil & Gas Issue 227 July 2025 | Page 20

Critical, co and under

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Protecting the utilities sector from supply chain threats.
By Doug McGeachie

The UK’ s utilities sector is facing growing threats from cybercriminals. From electricity to water and gas, these essential services are a critical aspect of modern society, meaning a successful cyberattack could have far-reaching consequences for national infrastructure, public safety and even economic stability.

The sector’ s dependence on a vast, interconnected supply chains, ageing infrastructure and operational technology( OT) systems make it particularly vulnerable. As cybercriminals increasingly seek to create widespread disruption, securing utility supply chains must become a top priority to prevent against potentially catastrophic attacks.
A prime target
Attacks on critical national infrastructure are nothing new. On a global scale for example, the US Colonial Pipeline ransomware attack disrupted fuel supplies, highlighting the importance of supply chain cybersecurity.
This proves the utilities sector is the ideal target for cybercriminals seeking to cause maximum disruption. Beyond operational
downtime and financial loss, such attacks can endanger lives, cripple essential services and even impact national security.
The supply chain weak link
What makes the utilities sector particularly vulnerable to cybersecurity threats is its reliance on interconnected networks of third-party suppliers. From technology vendors to logistics and maintenance firms, external organizations are integral to day-to-day operations yet often lack the same cybersecurity standards of the utility providers they serve.
Smaller suppliers are especially a risk. Without the resources for enterprise-grade defenses, they’ re often the entry point for attackers looking to infiltrate larger organizations. Once inside, threat actors can escalate privileges, move laterally across networks and remain undetected for extended periods, causing maximum disruption with minimal effort.
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