Securing Energy Infrastructure: Countering Emerging OT Threats in a Digitized Grid

The energy sector’s IT and OT systems face mounting cyber attacks. These systems, essential for delivering power, are now targets for sophisticated adversaries, making robust protection imperative.

Digitalization is flattening the traditional IT/OT hierarchy, forcing convergence. For utilities, this blurring means conventional cybersecurity tools and best practices often fall short in industrial control system (ICS) environments.

The rapid spread of IoT and IIoT devices expands the threat surface, exposing critical infrastructure to malware and other cyberattacks. Hackers increasingly use open‑source code and dark‑web toolkits, creating new attack vectors every day.

Forrester data shows 100% of organizations now connect IoT or IIoT devices to their ICS networks, with an average of four external systems involved. Public tools like Shodan and Kamerka let attackers map unprotected control systems, revealing facility locations and OT endpoints. Coupled with targeted malware such as Triton, this creates a worst‑case scenario for critical infrastructure.

Why is this alarming? A successful attack on power plants, gas pipelines, or the electric grid can cause prolonged outages, societal unrest, and even loss of life. Without electricity, internet, banking, and communications collapse, leading to chaos.

Utility firms are investing trillions in grid upgrades. To safeguard this ROI and maintain efficiency, their ICs must be detected and monitored in real time.

Therefore, energy companies need comprehensive device visibility across OT/ICS networks to continuously and passively identify, classify, and monitor threats without disrupting essential operations.

Uncertainty is a liability. Accenture reports 71% of organizations still view cyberattacks as a "black box." SANS notes 15% of breached firms take over a month to detect the breach, and 44% never pinpoint the source.

"Oil and gas firms historically relied on air‑gapping and safety barriers, but those defenses are insufficient. With most US systems no longer air‑gapped, each new digital application expands the attack surface, creating a real dilemma: how to balance digital efficiency with site security?" – Michael Van Chau, OT security practice lead, Accenture.

While energy companies invest heavily in environmental and safety programs, many have not linked safety to cybersecurity, despite cyberattacks on OT potentially causing similar damage. Accenture leads in OT security remediation, helping firms rapidly strengthen OT cyber posture.

An advanced network monitoring and situational awareness platform for OT/ICS can enhance asset visibility and performance. It also helps detect and prevent incidents before they damage the network.

Continuous monitoring establishes a baseline of normal behavior, enabling teams to spot deviations and focus resources on the most critical threats.

A comprehensive, intelligent OT/ICS monitoring solution boosts productivity, lowers risk, and delivers automated incident response, improving audit compliance.

IT/OT convergence introduces new security implications. Energy security teams must possess full situational awareness of network assets and understand operational risk. Gartner reports that in just two years, these teams now handle 70% of OT security, requiring visibility, control, and flexibility to protect their firms.

With an integrated IT/OT strategy and a unified device visibility platform, the energy sector can build the cyber resilience needed for a safer, smarter grid—more reliable, efficient, and secure.

Damiano Bolzoni is the vice president, industrial and operational technology at Forescout Technologies.