Three-quarters of large manufacturers have incorporated IoT solutions into their production lines, creating efficiency and quality improvements. However, this connectivity comes with a significant risk: every connected device becomes a potential entry point for cybercriminals. With industrial manufacturers ranking as one of the top targeted sectors by threat actors, securing these networks has become a critical priority rather than an optional consideration.

Summary:

• Industrial network security requires specialized approaches beyond traditional IT security to protect operational technology (OT) and critical production systems.
• Manufacturers face unique challenges including legacy equipment, proprietary protocols, and the convergence of IT/OT networks.
• Implementing defense-in-depth strategies with network segmentation, access controls, and continuous monitoring is essential for protecting manufacturing operations.

The Unique Security Challenges in Manufacturing Environments

Industrial networks face security challenges that differ significantly from traditional IT environments. Many operational technology (OT) assets were implemented decades ago, long before internet connectivity was standard. These systems were designed for reliability and performance-not security. As a result, manufacturing facilities often run legacy equipment with unpatched vulnerabilities alongside modern IoT devices, creating a complex security landscape.

The stakes are particularly high in manufacturing. While a cyberattack on business operations is costly, an attack on plant operations can be catastrophic-potentially disrupting production, damaging equipment, compromising safety, or even causing physical damage. 

Essential Components of Industrial Network Security

Network Segmentation and Zoning

A large automated factory should divide its machines and production lines into separate zones, using firewalls and gateways between them. This segmentation prevents lateral movement if one area is compromised. For example, programmable logic controllers (PLCs) that control automated machinery should be isolated from external-facing networks to prevent hackers from gaining access to critical production equipment.

More articles that could interest you:

• Simple PLC Basics: A Beginner’s Guide to Programmable Logic Controllers
• What is Programmable Automation?
• M2M Communication Protocols: The Language of Modern Manufacturing

Zero Trust Architecture

Unlike traditional security models that assume internal networks are safe, Zero Trust operates on the principle of “never trust, always verify.” Every user, device, and application must be authenticated and authorized before access is granted. This approach is particularly important as industrial control systems (ICS) and operational technology (OT) connect to corporate IT networks. Implementing role-based access controls and least-privilege principles limits access to critical systems, reducing the risk of both internal and external threats.

Multi-Factor Authentication and Encryption

With the increase in cyberattacks targeting sensitive manufacturing data, robust authentication methods and encryption have become necessities. Multi-factor authentication adds an extra security layer by requiring users to provide two or more verification factors. Combined with data encryption-both at rest and in transit-this ensures that even if credentials are compromised, unauthorized access can be mitigated.

Advanced Protection Strategies

AI-Driven Threat Detection

Artificial intelligence and machine learning are powerful tools for enhancing cybersecurity in manufacturing. These technologies analyze vast amounts of data to detect anomalies that could indicate potential cyber threats. With the increase in IoT devices on the factory floor, AI can identify suspicious behavior in real time, allowing manufacturers to respond to threats before they escalate.

Jump Hosts and Secure Remote Access

Due to the connected nature of manufacturing supply chains, secure access points are essential. Jump hosts-dedicated, hardened computers that serve as a gateway to a secure network-provide a controlled means of accessing sensitive systems. This approach is particularly important for remote maintenance and monitoring, which became more common during the pandemic and continues today.

Compliance and Standards

Industrial network security isn’t just about technology-it’s also about following established frameworks and standards. The IEC 62443 standards are becoming the go-to for securing industrial control systems in manufacturing. These standards provide guidelines for implementing secure industrial automation and control systems throughout their lifecycle.

Compliance with these standards isn’t just about checking boxes-it’s about creating a secure and resilient operational environment from the ground up. This extends to the selection of products and solutions, choosing equipment and software designed with security considerations at every stage of their lifecycle.

How Shoplogix Supports Industrial Network Security

Shoplogix helps manufacturers address these security challenges while maintaining operational efficiency. By providing real-time visibility into production processes and network performance, Shoplogix enables manufacturers to identify potential security issues before they impact operations. The platform’s ability to monitor network traffic and detect anomalies supports a proactive security posture, allowing manufacturing teams to focus on production rather than constantly responding to security incidents.

Building a Resilient Security Strategy

The most effective industrial network security strategies combine technology, processes, and people. Regular risk assessments help identify and prioritize vulnerabilities. Employee training ensures that everyone understands their role in maintaining security. And continuous monitoring provides early warning of potential threats.

As manufacturing continues to embrace digital transformation, the boundary between IT and OT will continue to blur. Successful manufacturers will be those who recognize that industrial network security is not a one-time project but an ongoing process-one that balances the need for connectivity and innovation with the imperative to protect critical production systems.

What You Should Do Next 

Explore the Shoplogix Blog

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