If you’re running a manufacturing operation, you’ve likely heard the terms IT security and OT security thrown around. But what’s the difference, and why should you care about both? For many organizations, the answer becomes clear only after a cyber incident exposes gaps in manufacturing IT and cybersecurity preparedness.
Understanding the Divide
IT (Information Technology) security protects business systems such as email servers, accounting software, customer databases, and office computers. OT (Operational Technology) security protects the systems that run the production floor, including PLCs, SCADA systems, robotics, and industrial control systems.
Security is still security. The difference lies in the assets being protected and the discipline required to protect them. IT and OT environments operate under very different constraints, and the protocols used to secure them must reflect those realities.
For years, these worlds remained largely separate. Factory equipment ran on isolated networks with little or no external connectivity. That model no longer holds. Modern manufacturing depends on connectivity for remote monitoring, predictive maintenance, analytics, and supply chain integration. As a result, OT systems increasingly communicate beyond the factory floor, expanding the attack surface and increasing reliance on a manufacturing-focused cybersecurity strategy.
Why Traditional IT Security Isn’t Enough
IT and OT environments have fundamentally different priorities. IT security can tolerate brief system downtime for patches, updates, and reboots. OT systems often cannot. A production line going offline can cost thousands of dollars per minute.
IT systems prioritize data confidentiality and integrity. OT systems prioritize safety, reliability, and continuous operation. Applying traditional IT security controls to OT environments without adaptation can be disastrous. A patch that crashes a PLC during production is not an inconvenience. It is a catastrophic operational failure.
OT security is not less rigorous than IT security. In many cases, it is more complex. It requires approaches that account for uptime requirements, legacy hardware, and safety-critical processes. Organizations that have not performed formal security assessments across both IT and OT environments often underestimate these risks.
As Vin DiPippo, Chief Information Security Officer at Vertikal6, explains:
“Unlike printers, workstations, and even network gear and servers, upgrading OT is rarely measured in thousands or even tens of thousands of dollars. It is often hundreds of thousands of dollars or more. We need a layered strategy that protects against emerging threats without requiring forklift upgrades to production equipment.”
The Converging Threat
Cybercriminals understand the gap between IT and OT security. Ransomware attacks increasingly target factory floors because attackers know manufacturers are under extreme pressure to restore operations quickly. These campaigns often succeed because legacy OT equipment lacks modern protections, and many organizations lack visibility into what is connected to their networks.
When incidents occur, organizations without established incident response and recovery services face longer downtime and higher costs.
DiPippo emphasizes the broader consequences of OT compromise:
“Downtime on a manufacturing floor incurs costs every minute it is not productive. Beyond that, risks to life, health, and safety arise when OT systems regulate pressure, temperature, volatile gases, chemicals, or powerful equipment.”
The risk extends beyond downtime and revenue loss. In sensitive industries such as medical device manufacturing and defense contracting, OT compromise introduces the possibility of sabotage.
“A manufacturer’s exposure to sabotage is greatly heightened by threats to OT,” DiPippo notes. “Imagine the harm caused by subtle defects introduced into production through a silent breach of systems that govern exacting specifications.”
Moving Forward
Protecting OT remains an infrequent discussion despite its uniquely high stakes. As DiPippo underscores:
“Protecting OT is far too infrequent a discussion given its unique challenges and potentially dire risks.”
Manufacturers need both IT and OT security expertise, and those disciplines must work together. Network segmentation helps isolate production systems from business networks. Specialized OT security tools monitor industrial protocols and abnormal behavior. Governance and oversight are strengthened when organizations align OT protection efforts with regulatory and contractual compliance requirements. IT and OT teams cannot operate in silos. Collaboration is no longer optional.
Manufacturing security is not a technical checkbox. It is operational survival.
