5 OT Cybersecurity Trends Reshaping the Energy Sector in 2026

The energy sector is becoming more connected, distributed and software-defined.

Renewable plants, battery storage systems, substations, grid-control platforms and remote operations are increasingly working as part of a single interconnected ecosystem. This energy convergence creates new opportunities for efficiency, flexibility and coordinated control.

But it also changes the cybersecurity landscape.

Operational Technology environments that were once isolated are now connected to corporate networks, cloud platforms, external service providers and geographically distributed assets. As a result, OT cybersecurity can no longer be treated as a purely technical responsibility.

It is becoming a fundamental part of operational resilience, business continuity and energy security.

Here are five trends that are reshaping OT cybersecurity in the energy sector in 2026.

1. Energy Convergence Is Expanding the OT Attack Surface

The energy system is no longer composed of isolated plants operating independently.

Solar, wind, battery storage, substations, grid infrastructure and digital platforms are increasingly interconnected. At the same time, energy companies rely on remote monitoring, cloud services, APIs, industrial IoT devices and third-party integrations to operate increasingly complex portfolios.

This convergence creates a much broader and more dynamic attack surface.

A vulnerability affecting an engineering workstation, industrial router, remote-access gateway or third-party connection may provide an entry point into systems supporting critical operational processes.

In practice, the OT attack surface can include permanently enabled vendor VPN connections, shared jump servers, HMI or SCADA environments indirectly reachable through corporate IT networks, cloud connections used by monitoring platforms, APIs exchanging data between operational and enterprise systems, and industrial routers or modems installed across remote renewable plants and substations.

The growing number of distributed energy resources also means that organizations must protect not only central infrastructure, but potentially hundreds or thousands of connected devices and sites.

Recent incidents in Poland involving energy infrastructure have highlighted weaknesses related to internet-exposed OT devices, insecure remote access and insufficient separation between operational environments. CISA (America’s Cyber Defense Agency) has consequently reinforced its guidance on reducing internet exposure and protecting OT and ICS environments.

For energy operators, the first challenge is therefore visibility. Organizations cannot protect assets they cannot identify, classify and contextualize.

In OT, an IP address and a device name provide only part of the picture. What matters is understanding the operational consequence of that asset becoming unavailable or compromised.

2. Identity and Remote Access Are Becoming the New OT Perimeter

Traditional OT security strategies were largely built around network boundaries.

Today, the real perimeter increasingly follows users, identities, devices and access privileges.

Renewable energy assets are frequently supported by OEMs, system integrators, maintenance contractors and remote engineering teams. Each external connection can be operationally necessary, but it can also introduce unmanaged credentials, excessive privileges or access paths that remain active longer than required.

Common weaknesses include vendor accounts remaining enabled after an intervention, credentials shared between maintenance technicians, VPN connections without multi-factor authentication, privileged users with broader permissions than operationally necessary, and remote sessions that are neither monitored nor recorded.

The risk is not remote access itself. The risk appears when access becomes persistent, excessive or invisible.

Attackers do not always need to exploit highly sophisticated industrial vulnerabilities. In many cases, compromised credentials, poorly protected VPNs or legitimate administration tools can provide the access they need.

This is driving greater adoption of OT-adapted Zero Trust principles, including:

• verifying every user and device
• limiting access according to role and operational necessity
• separating vendor access from core operational networks
• monitoring privileged sessions
• removing persistent access whenever possible

In April 2026, CISA published specific guidance on adapting Zero Trust principles to operational technology, demonstrating how identity-based controls are becoming increasingly relevant beyond traditional IT environments.

The objective is not to eliminate remote operations.
It is to make every connection visible, controlled and accountable.

3. Compliance Is Moving From Documentation to Continuous Governance

Cybersecurity regulation is raising expectations across critical infrastructure.

In Europe, NIS2 has expanded the number of organizations subject to cybersecurity requirements and strengthened expectations concerning risk management, incident handling, supply-chain security, business continuity and management accountability.

But compliance cannot be achieved through policies and periodic assessments alone.

Energy environments change continuously. New assets are commissioned, software is updated, vendors are added, vulnerabilities emerge and network architectures evolve. A risk assessment performed once a year can rapidly become disconnected from the real operational environment.

The emerging trend is therefore toward continuous OT cybersecurity governance.

Organizations need to connect:

• asset inventories
• regulatory requirements
• technical vulnerabilities
• operational risks
• remediation activities
• responsibilities and deadlines
• audit evidence

In practice, continuous governance means being able to answer very concrete questions:

• Who owns this asset?
• Who is responsible for remediation?
• When is the action due?
• Has the required technical control actually been implemented?
• Is the supporting evidence still valid?
• Who approved the residual risk?
• Which regulatory requirement does the control address?

This is where compliance becomes operational rather than documentary.

Organizations also need to consider the real exposure of the asset, the criticality of the process it supports, the presence of remote access, the availability of a realistic exploit path, the operational consequences of compromise and whether the system can be safely patched.

A critical vulnerability affecting an isolated device may represent a very different operational risk from a lower-scoring vulnerability affecting an engineering workstation accessible through a vendor VPN.

This changes the role of cybersecurity platforms. They must do more than generate reports. They must help organizations turn compliance requirements into prioritized and traceable operational actions.

4. Cyber Resilience Is Becoming More Important Than Prevention Alone

No organization can guarantee that every cyberattack will be prevented. The more important question is what happens when an incident occurs.

• Can the organization identify which assets and processes are affected?
• Can it isolate the incident without unnecessarily shutting down operations?
• Can critical systems be restored safely?
• Are recovery procedures documented and regularly tested?

OT environments make these questions especially complex.

Unlike conventional IT systems, industrial assets cannot always be patched, restarted or disconnected immediately. Cybersecurity decisions must consider safety, plant availability, equipment lifecycles, grid obligations and operational continuity.

This is one of the fundamental differences between IT and OT cybersecurity.

A critical vulnerability affecting a PLC, HMI or engineering workstation cannot always be remediated immediately if doing so requires interrupting production or creating an operational risk.

In these cases, organizations may need to rely temporarily on compensating controls such as network segmentation, stricter access restrictions, enhanced monitoring, application allowlisting or controlled remote access until remediation can be performed during an appropriate maintenance window.

In IT, containment may mean disconnecting a system. In OT, disconnecting the wrong system can itself become an operational incident.

This is driving a shift from a prevention-only mindset toward cyber resilience.

Leading industrial organizations are increasingly connecting cyber risk directly to operational consequences such as downtime, safety, production losses and service continuity. However, resilience and recovery planning remain significant gaps for many organizations.

In practice, this means moving from:

“How do we stop every attack?”

to:

“How do we maintain safe operations, contain disruption and recover quickly?”

5. AI Is Accelerating Both Attacks and Defence

Artificial intelligence is rapidly reshaping cybersecurity and is the biggest driver of change in the field, according to a new World Economic Forum report. Some 94% of cyber leaders identify AI as a defining force and 77% of organizations already use it in their cyber operations.

Threat actors can use AI to accelerate reconnaissance, create more convincing social-engineering campaigns, identify exposed infrastructure and automate parts of the attack process.

At the same time, defenders can use AI to analyse large volumes of security data, identify anomalies, correlate vulnerabilities and support faster incident investigation.

Organizations that extensively leverage AI in security reduce average breach costs by up to $1.9 million and shorten breach lifecycles by approximately 80 days.

In OT, however, AI must be used carefully.

Anomalous behavior does not automatically mean malicious behavior.

Changes in network traffic or device behavior may result from maintenance activities, configuration changes, equipment restarts, firmware updates, production variations, commissioning activities or legitimate communication between industrial systems.

The challenge is therefore not simply detecting deviations but determining whether those deviations matter in their operational context.

Security teams must understand:

• what the asset does
• how critical it is
• which process it supports
• whether it can be safely interrupted
• what the operational impact of a compromise would be

Recent research has shown that AI systems can support vulnerability prioritization, event correlation, anomaly detection and investigation, but effective OT security still requires operational context and human validation.

This becomes particularly important before introducing automated response. Automatically blocking traffic, disconnecting equipment or changing configurations may be appropriate in some IT environments, but in an industrial plant the same action could affect production, availability or safety.

The future is therefore unlikely to be fully autonomous OT cybersecurity.

It will increasingly be AI-assisted decision-making: using automation to accelerate analysis and prioritization, while preserving operational context, industrial expertise and human accountability.

From Fragmented Cybersecurity to Operational Resilience

The common thread across these trends is convergence.

Energy assets are converging. IT and OT systems are converging. Regulatory, operational and cybersecurity responsibilities are converging.

Yet many organizations still manage OT risk through disconnected spreadsheets, periodic assessments and separate tools that provide only a partial view of their operational exposure.

This fragmentation makes it difficult to understand which risks matter most, who is responsible for addressing them and whether remediation activities are actually progressing.

In practice, organizations need to be able to determine which assets represent the greatest operational risk, which vulnerabilities require immediate action, who owns each remediation activity, whether required controls have actually been implemented and which residual risks have been formally accepted.

Ryskore®, BaxEnergy’s OT-native Governance, Risk and Compliance platform, is designed to help industrial and energy organizations move beyond fragmented cybersecurity management.