Critical Infrastructure Cybersecurity Market Size, Share & Growth Forecast (2026-2031)

The Critical Infrastructure Cybersecurity Market is forecast to grow at a CAGR of 14.8%, reaching USD 59.4 billion in 2031 from USD 29.8 billion in 2026.

Operational technology (OT) security, which includes industrial control systems (ICS), SCADA, and cyber-physical systems in particular, is expanding at a faster rate, with several analysts forecasting it will hit about USD 25 billion by 2026 and continue to grow with a compound annual growth rate (CAGR) in the mid-teens as traditional air gapped assumptions are coming to a crashing end across energy, manufacturing, and utility sectors.

Critical infrastructure cybersecurity includes the security of energy systems, oil and gas pipelines, water and wastewater, transportation systems, healthcare delivery systems, defense-industrial systems and telecommunications infrastructure from cyber and cyber-physical threats. Conventional enterprise IT security is not an appropriate fit for critical infrastructure cybersecurity because legacy systems are ICSs that were never built with security in mind, uptime and safety requirements make it difficult for applying many of the same patching and monitoring techniques you would apply to enterprise IT, and the number of IoT and IIoT sensors is growing faster than security teams can keep track of.

In February 2025, Gartner released its inaugural Magic Quadrant for Cyber-Physical Systems Protection Platforms, which marked a pivotal moment by evaluating 17 vendors based on four criteria: asset discovery, threat detection, vulnerability management, and secure remote access.In February 2025, Gartner released its first Magic Quadrant for Cyber-Physical Systems Protection Platforms, which highlighted a milestone in the evaluation of 17 vendors across four categories: asset discovery, threat detection, vulnerability management, and secure remote access, with Claroty, Dragos, Microsoft, Armis, and Nozomi Networks being named Leaders. In the past, most companies using CPS were a minority that used to only have generic IT security platforms used in OT; however, by 2027, Gartner predicts that 75% of such companies will have CPS protection platforms.

Market Dynamics

Market Drivers

• The energy, water and manufacturing industries are filling with internet-connected sensors and devices for the industrial internet of things (IIoT), and the influx of those devices is outpacing the ability of legacy air-gapped security models. This means that the need for constant asset discovery and network monitoring tailored for industrial protocols is rising.

• Ransomware and Nation-State targeting of industrial operators are continuing to rise sharply. In January 2025, ransomware attacks against industrial operators documented a 46% surge, necessitating prompt investments in OT detection and incident response capabilities.

• Internationally, the EU's NIS2 Directive, the U.S. NERC CIP-015 requirements, and the ISA/IEC 62443 standards and pipeline and rail TSA security directives are transforming cybersecurity from being an optional investment to a mandatory budget item that has clear deadlines and financial consequences for non-compliance.

Market Restraints & Opportunities

• Skilled cybersecurity workforce shortage, the high implementation and integration costs of AI-native security platforms, and potential adversarial manipulation of AI detection models (including AI-powered attacks targeting AI defenses) are major challenges to AI adoption, especially for SMBs.

• However, continued enterprise investment in security automation, the market's evolution of autonomous SOC operations with agentic AI platforms, increasing regulatory requirements for AI risk management open the door to significant long-term potential, with cloud security, identity protection and critical-infrastructure markets like energy, healthcare and financial services leading the way.

Key Developments

• August 2026: Fortinet joined Project Watershed 250, launched with U.S. government and industry leaders to strengthen cybersecurity and resilience across water and wastewater infrastructure.

• August 2026: Cisco launched Sovereign Critical Infrastructure in Canada, offering on-premises and air-gapped networking, security, compute, collaboration, and Splunk capabilities for critical organizations.

• August 2026: Palo Alto Networks introduced its Frontier AI Critical Defense Program, coordinating OT and technology partners to deploy network-level virtual patches against AI-driven exploits.

Market Segmentation

By Offering: Solutions

Solutions claim the largest offering share at 52.4% in 2031, reaching USD 31.1 billion and expanding at a 15.0% CAGR, driven by asset discovery, network monitoring, threat detection, vulnerability management, and secure remote access for industrial environments.

Claroty provides comprehensive cyber-physical systems protection, supporting use cases across healthcare, manufacturing, and critical infrastructure with broad OT security capabilities.

Dragos delivers industrial threat intelligence and incident response through deep protocol-level analysis of industrial control system traffic, supporting electric utilities, oil and gas, and public sector operators.

Nozomi Networks provides large-scale visibility and AI-driven analytics for OT and IoT environments, helping operators monitor and secure distributed industrial locations.

By Security Type: Operational Technology (OT) / ICS Security

The OT and industrial control system security segment holds a 34.0% share in 2026, valued at USD 10.13 billion, and is projected to reach a 38.8% share by 2031, driven by IT-OT convergence, expanding cyber threats, and demand for specialized monitoring tools.

Microsoft Defender for IoT supports unified security operations, enabling organizations using the Microsoft security stack to improve asset visibility across OT environments without adopting a separate platform.

Armis provides agentless asset intelligence across converged IT, OT, and IoT environments, helping operators maximize visibility without deploying endpoint agents.

By End-User Vertical: Energy & Utilities

Energy and utilities is one of the top end-user verticals as compliance with NERC CIP requirements in North America and the NIS2 requirements in Europe remain a priority, and there is a persistent interest from nation-states in disrupting the electrical grid and pipelines.

Increasing use in water and wastewater systems brought on by federal and state requirements after major water system intrusions at municipal water systems are projected to see good vertical growth over the forecast period.

Regional Analysis

North America Market Analysis

North America accounts for the highest regional market share, with the segment growing at a 13.3% CAGR, driven by binding NERC CIP requirements, CISA procurement guidance, and leading OT security vendors.

Europe Market Analysis

The minimum cybersecurity measures and penalty regime enforced by the NIS2 Directive are creating a binding shape for Europe's market, with the Nordics, Germany and France being the top three countries investing in enterprise and public sector deployment of NIS2-compliant industrial security platforms.

Asia-Pacific Market Analysis

Asia-Pacific is projected to experience the highest growth, reaching a 27.9% share in 2031, driven by infrastructure modernization, rising cyber attacks, and expanding regulatory frameworks across China, India, Japan, and Southeast Asia.

Middle East and Africa Market Analysis

Energy-system digitization and the development of smart cities are driving increased investment in the region’s critical infrastructure cybersecurity, especially in UAE and Saudi Arabia.

South America Market Analysis

South America is an emerging market for critical infrastructure cybersecurity adoption, with increased investment in critical infrastructure security monitoring in energy and water sector markets in Brazil.

List of Companies

• Claroty

• Dragos

• Nozomi Networks

• Microsoft

• Armis

• Tenable

• Cisco

• Fortinet

• Palo Alto Networks

• Honeywell

Competitive Landscape

Claroty

Claroty's cyber-physical systems protection platform extends from discovery of assets to detection of threats, management of vulnerabilities, and secure access, and in particular in healthcare, manufacturing and critical infrastructure deployments, is a Leader on Gartner's first-ever CPS Protection Platforms Magic Quadrant.

Dragos

Industrial threat intelligence and incident response is Dragos' forte, with deep protocol-level visibility into electric utilities, oil and gas and public-sector OT environments.

Nozomi Networks

Nozomi Networks provides OT and IoT visibility and AI-based anomaly detection at scale, for large, distributed industrial operators that need to be monitored across a large number of sites.

Analyst View

The Critical Infrastructure Cybersecurity market is shifting from point-solution IT security extended into OT environments toward unified cyber-physical systems protection platforms purpose-built for industrial contexts. Binding regulation, particularly the EU's NIS2 Directive and NERC's CIP-015 internal network monitoring requirement, is converting cybersecurity from a discretionary investment into a compliance-driven budget line with real financial consequences for inaction. Vendors that combine deep OT protocol expertise, broad asset visibility across converged IT/OT/IoT environments, and managed-service delivery models suited to resource-constrained municipal and utility operators are best positioned to lead the next phase of market growth.

Critical Infrastructure Cybersecurity Market Scope: