Connected systems are critical to maintaining production efficiency and responsiveness in everyday manufacturing environments. As factories combine information technology (IT) with operational technology (OT), digital networks are increasingly connected to the physical equipment and operations on the factory floor.

However, interconnected systems mean that a security breach can do more than steal data — it can also stop production, halt equipment or put workers' safety at risk. To safeguard both cyber and physical assets amid evolving threats, manufacturing executives are increasingly adopting integrated security measures.

Why Cyber-Physical Security Convergence is Critical

IT and OT had very distinct jobs in the past when businesses were more traditional. IT systems mostly manage and preserve data, such as company records, emails and enterprise software. On the other hand, OT systems control actual operations on the factory floor, including programmable logic controllers (PLCs), industrial control systems and machinery that keep production running.

As manufacturers use smart technologies and connect their machines to their business networks, these two areas are becoming increasingly interconnected. This integration makes activities more efficient and easier to see, but it also gives attackers additional opportunities to get in.

Because of this, the manufacturing sector has become one of the most attacked. In fact, current threat intelligence reports show that manufacturers accounted for 27.7% of all cyberattacks in 2025, the largest share of any sector.

Manufacturing Threat Scenarios

Threats can come from many places in manufacturing environments because they mix digital systems with physical infrastructure. A weakness in either the real or digital world can swiftly spread to the other. Some common scenarios include:

  • Physical-to-cyber intrusion: If a malicious or infected USB drive is plugged into a human-machine interface (HMI) on the factory floor, it could transmit malware over the OT network.
  • Cyber-to-physical manipulation: Attackers could exploit weaknesses in PLCs to alter how machines operate, change product specifications or compromise safety systems.
  • Supply chain compromise: Malware embedded in firmware or other system components can enter a facility via third-party hardware or software updates and begin operating once it reaches the manufacturing line.

These kinds of events reveal why manufacturers can no longer treat cybersecurity and physical security as two different issues.

Converged Security Strategies

Protecting modern manufacturing environments requires more than isolated security measures. Organizations must adopt integrated strategies that address cyber threats and physical vulnerabilities across their operations.

1. Bridge the IT/OT Divide With a Unified Governance Model

The conventional separation between IT and OT teams is a significant security challenge in manufacturing. When these processes operate independently, security holes can arise because cyber threats to operational systems may not be fully mitigated in both settings.

Industry research shows that many companies are closing this gap. The 2024 SANS ICS/OT

Cybersecurity survey found that 39% of firms said that integrating ICS security governance with the company's overall security policy drives the approach. To help with this change, businesses can set up governance structures that bring together leaders from IT, engineering and plant operations.

Setting up a joint committee helps ensure that security decisions support production safety and reliability while addressing cyber hazards across the enterprise.

2. Deploy OT-Specific Monitoring for Security and Efficiency

Standard IT security tools often struggle to interpret the industrial protocols used on manufacturing networks. Systems that rely on protocols require monitoring solutions specifically designed to understand how machines communicate and operate. Without that visibility, unusual behavior inside the OT environment may go undetected until it begins affecting production.

Modern OT monitoring platforms can provide benefits beyond threat detection. Many use machine learning and behavioral analysis to recognize patterns in network traffic and device activity, allowing organizations to detect anomalies earlier and generate more accurate alerts.

At the same time, these tools can monitor equipment performance data, helping teams identify maintenance needs and optimize production processes. In practice, a single monitoring platform can strengthen cybersecurity while also supporting predictive maintenance and overall operational efficiency.

3. Secure the Industrial Zone With Network Segmentation

As manufacturing systems become increasingly connected, network segmentation is a crucial way to prevent threats from spreading too far. Segmentation divides a network into smaller portions so that important operational systems are not directly connected to corporate IT environments or the outside world. This method reduces the risk that an attack on a single part of the system could allow attackers to access industrial control systems.

Even though it is important, many firms are still working to fully adopt segmentation across all their environments. According to surveys, 79% of industrial companies think network segmentation is a key security priority. However, only around one-third of them have fully implemented both macro- and micro-segmentation.

It is possible to significantly reduce the effects of a cyber incident by strengthening the separation between IT and OT systems. Segmentation, together with monitoring and access controls, helps businesses keep threats under control and their manufacturing operations safer and more resilient.

4. Implement Zero-Trust Principles for Production Assets

Manufacturing facilities sometimes use old equipment that was not made with modern cybersecurity in mind. Because of this, businesses should not assume that any user, device or system connected to the network is safe. With a zero-trust strategy, you do not automatically trust internal systems. Instead, you always check access before letting anyone engage with important production assets.

To make this model work, manufacturers can make it harder for anyone to connect to the OT network. This could mean limiting device rights, checking equipment before it connects to operational systems, and limiting how external devices can interact with production assets.

Teams may check devices before letting them in by taking practical steps, such as locking down idle USB ports and using network access control (NAC) tools. These protections make it less likely that unauthorized devices or hacked accounts can get to key industrial systems.

Securing the Future of Connected Manufacturing

The distinction between cyber and physical security is becoming less distinct as manufacturing facilities grow increasingly digitally integrated. To keep modern production systems safe, companies need to look beyond traditional security silos and adopt solutions that address threats in both contexts. By using the main cyber-physical security convergence solutions, manufacturers can make their operations more reliable and less vulnerable.