Mitigate OT/IT Integration Risks in Industrial M&A

Integration Can Turn Inherited Risk into Operational Risk

The riskiest point in an industrial M&A deal may come after closing, when teams begin integrating networks, systems, remote access, and vendors. Linking these environments before understanding their dependencies can expose critical operations to new threats.

A rushed integration gives attackers new opportunities to exploit those vulnerabilities, turning a security weakness into a production or safety issue. A phased, risk-led approach helps companies integrate safely while strengthening cyber resilience across IT, operational technology (OT), and industrial control environments.

M&A Activity Is Creating More Opportunities for Cyber Risk

Energy and natural resources companies continue to pursue major transactions. KPMG notes that deal value jumped 38% in the second half of 2025, totaling $266.1 billion across 765 transactions. As deals grow larger, integration becomes more complex.

Cybersecurity adds another risk layer. KPMG’s paper on cyber issues disrupting energy M&A highlights the limits of pre-close assessments. Timelines are tight, and access is restricted. But without complete documentation, acquirers can’t fully assess the Target's security posture. That means they might not discover vulnerabilities in legacy infrastructure and operational systems until after closing.

The stakes rise when an industrial integration reaches OT. This technology controls physical processes. It also often relies on legacy systems that can't tolerate downtime or accommodate IT-driven changes.

OT/IT Integration Introduces Unique Risks

Integrating industrial environments requires a different approach from merging conventional IT systems. Several factors make these scenarios particularly challenging:

• Legacy systems and incomplete visibility: IT inventories often miss old control systems and specialized equipment. As a result, teams may not understand every vulnerability or dependency before integration.
• New connections expand the attack surface: During integration, organizations link networks, consolidate identity systems, and expand remote access. They often incorporate new third-party access points, too. This exposes OT systems to new threats.
• IT, OT, and AI convergence adds complexity: Industrial companies increasingly use AI for predictive maintenance, distributed energy resources, grid optimization, and anomaly detection. These applications can create new links between enterprise and operational systems. When an acquirer integrates environments, existing security controls and monitoring may not provide the needed visibility.
• Integration can disrupt key operations: Changes to IT and AI systems may affect equipment performance. They can also impact production and threaten grid reliability and worker safety. However, many OT systems can’t be taken offline easily for patching, testing, or investigation.
• Different priorities complicate integration: IT teams focus on consolidating and rationalizing the new environment. Plant operators prioritize availability and safety. Integration plans must account for these operational differences.

Consider the mining company featured in this SecureOps customer story. It uses real-time location systems, gas detection, and air-quality monitoring. A security incident involving these systems could cause downtime or data loss. But it could also endanger workers.

Not every integration leads to an operational or safety incident. But connecting separate environments can turn existing weaknesses into more serious threats. This makes it essential to understand and manage OT risk throughout the transition.

A Phased Approach Keeps Integration from Becoming the Inflection Point

Companies can reduce integration risk by building security into their plan. A phased approach gives teams time to understand the combined environment and protect critical systems.

• Establish visibility before connecting systems. Inventory OT and IT assets.

Map key processes and dependencies. Find remote access and vendor links.

Check for vulnerabilities. After closing, confirm findings against the environment.

• Build resilience into the integration plan. Identify critical systems and define recovery priorities. Review incident response and business continuity plans to cover the combined environment. These steps keep key operations running. They also help speed recovery if an incident disrupts integration.
• Prioritize operational and safety risks with plant managers, engineers, IT, and security teams. Determine which systems can be compromised. Focus on those that might disrupt production or threaten worker safety. Rank remediation and protective measures by business impact, not technical severity alone.
• Contain risk during integration. Keep environments segmented where necessary. Don’t automatically extend trust between the acquirer and Target. Review access, secure remote connections, and extend monitoring.
• Coordinate integration with operations. Match security upgrades to maintenance windows. Align connectivity updates with process needs. Follow change control procedures. Define who approves updates and how teams respond if an integration step causes issues.
• Maintain oversight beyond initial integration. Integration is an ongoing process, not a one-time milestone. Reassess the combined environment regularly as new risks emerge and priorities shift.

How SecureOps Supports Secure M&A Integration

SecureOps helps industrial companies manage cybersecurity risks throughout the M&A process, from assessment and planning to interim protection and long-term improvements.

• Identify inherited risks and integration gaps. SecureOps’ custom M&A cyber assessments check identity and network security. They also find vulnerabilities. Plus, they review AI, monitoring, and security processes. The findings help acquirers understand how environments interact and spot risks. This sets the stage for a clear, prioritized integration roadmap.
• Maintain cyber resilience and business continuity throughout integration. The SecureOps Shield provides interim security for the acquirer and Target. As the teams assess inherited risks and weaknesses, The Shield reduces exposure.
• Extend visibility and monitoring. SecureOps helps organizations identify and track threats across complex environments, including OT. Clear visibility helps security teams detect issues as systems, access paths, and dependencies change.
• Bring specialized OT security expertise. To secure industrial environments properly, organizations must understand operational limits and legacy systems. Security decisions must also support business continuity and worker safety. SecureOps provides industry-specific expertise to help organizations meet these requirements.
• Strengthen incident response. During integration, teams need clear escalation paths and coordinated response procedures. SecureOps provides ongoing monitoring and response support. This extends internal capabilities while enabling teams to focus on integration priorities.
• Support long-term security maturity. SecureOps works with internal teams to address inherited risks. It also adapts security to the combined environment. Plus, its cyber resilience framework provides a foundation for ongoing improvements.

The mining-company example shows how this partnership works in practice. SecureOps provided 24/7 monitoring and fast incident response. It adjusted to the company's security needs. It also expanded the security operations center (SOC) to include OT monitoring. The company benefits from a partner who enables faster response times and strengthens long-term security.

Protect Deal Value by Protecting Operations

M&A integration should bring two organizations together while protecting the operations that create business value. In industrial environments, that means understanding Inherited security risks and their potential impact on production and safety before connecting the environments.

A phased approach helps teams manage those risks throughout integration. With the right protection and expertise, they can keep critical operations running while building a more resilient business and capturing the deal's value.