The Escalating Threat to Critical Infrastructure

The Strategic Imperative of Securing Critical Infrastructure 

The protection of U.S. critical infrastructure is no longer a peripheral concern—it is an urgent operational necessity. A recent Executive Order declaring a national emergency over the bulk-power system serves as a stark reminder of this reality. Cyber adversaries are increasingly moving beyond data theft, deliberately targeting systems that govern the physical world.

Threat actors are shifting their focus to the lifelines of modern society: power grids, municipal water supplies, and medical facilities. While Artificial Intelligence dominates current tech conversations, AI algorithms are entirely useless if data centers cannot be cooled or if basic civic utilities fail. Securing these physical foundations must take precedence.

The Convergence of Threats: Why Attacks Are Surging

The rapid escalation of cyber attacks against industrial environments is a calculated trend driven by four converging factors:

• Global Geopolitical Friction: Nation-states and aligned hacking groups are pre-positioning themselves for future conflicts or actively seeking to disrupt the daily lives of rival populations.
• The Weaponization of AI: Threat actors no longer need deep engineering expertise in niche protocols like Modbus or BACnet. Today, attackers can simply utilize AI agents to autonomously scan targets and identify critical exposures, drastically lowering the barrier to entry.
• Resource Depletion: Operational Technology (OT) teams consistently operate with inadequate funding and severe staffing shortages.
• IT and OT Amalgamation: The accidental or forced blending of Information Technology (IT) and OT networks has inadvertently expanded the attack surface.

This creates a highly perilous environment. Under-resourced infrastructure defenders are now pitted against highly motivated adversaries armed with AI capabilities. Because disconnecting OT from IT is practically impossible in most modern environments, adversaries exploit this convergence, using interconnected IT systems as a bridge to pivot directly into sensitive OT networks.

The Hidden Realities of IT/OT Integration

Recent internal telemetry from a runZero survey of local area networks (LANs) illustrates the severity of this issue. OT assets were discovered within the addressable network space of every single industry evaluated. More alarmingly, nearly every sector had a fraction of its OT equipment exposed directly to the public internet, providing attackers with immediate, reachable targets.

Furthermore, relying solely on traditional perimeter defenses like VPNs, reverse proxies, or firewalls is a failing strategy. Over the past three years—including the current landscape of 2026—the CISA Known Exploited Vulnerabilities (KEV) catalog has consistently recorded roughly 40 exploited vulnerabilities annually that specifically target edge security technologies. As exploit development accelerates, perimeter defenses alone cannot guarantee network integrity.

Actionable Strategies to Fortify OT Environments

Defending these complex networks requires profound visibility and proactive hardening. runZero provides essential capabilities to help IT and OT defenders secure their infrastructure:

• Locating Internet-Facing PLCs: Federal agencies like the FBI and EPA strongly advise removing Programmable Logic Controllers (PLCs) from the public internet. However, you cannot remove what you cannot see. runZero scans both internal and external attack surfaces to pinpoint every active PLC, map its connections, and determine its exact distance from the internet.
• Detecting Default Credentials: Unchanged default passwords are an open door for attackers. runZero automatically identifies these weak entry points, preventing adversaries from bypassing security via trivial credentials.
• Mapping Attack Paths: Static network diagrams are insufficient. Organizations must understand exactly how a threat actor could navigate their infrastructure. runZero maps lateral movement possibilities, revealing how an attacker could pivot from a breach point to high-value OT targets.
• Identifying End-of-Life (EOL) Edge Devices: Because edge security hardware is a primary initial access vector, identifying and upgrading outdated, EOL equipment is a fundamental security requirement. runZero natively flags these aging devices for remediation.

Securing the Foundation of Society

runZero currently secures some of the world’s most complex and sensitive environments, spanning telecommunications, government services, healthcare, municipal utilities, biotech, and aerospace and defense. Our platform delivers absolute asset visibility, exposes hidden risks, maps critical attack paths, and validates network segmentation integrity.