The Ransomware Threat Manufacturers Can’t Afford to Ignore

Attackers aren’t just targeting your IT systems anymore. Your production floor is in their sights too and most manufacturers aren’t ready.

Manufacturing Is Now the Biggest Target

Ransomware attacks on industrial facilities have surged, and manufacturers are bearing the brunt. A recent TechTarget report found that proprietary engineering designs and production processes make industrial companies especially vulnerable to data theft – with costs running into the millions per incident.

The reason is straightforward: attackers know that shutting down a production line is far more painful than shutting down an office. When operations stop, every minute costs money. That leverage is exactly what ransomware groups exploit.

What makes this particularly dangerous is that many manufacturers are still operating under an outdated assumption: “We’re not connected to the internet, so we’re safe.” That was never entirely true, and today it’s dangerously wrong. Modern OT environments are increasingly connected to IT systems, cloud services, and remote OEM partners – and each of those connections is a potential entry point.

Five Ways to Reduce Your Exposure

Security frameworks for industrial environments typically focus on five core areas:

• Risk posture management
• Network segmentation
• Secure remote access for OEM partners and vendors
• Threat detection and response
• Endpoint security tools

All five matter. But for most manufacturers, the single highest-impact first step is network segmentation combined with controlled remote access. Here’s why this is harder than it sounds – and where most implementations go wrong.

The DMZ Problem Nobody Talks About

The standard guidance is to use a DMZ (Demilitarized Zone) – a buffer layer that separates your operational technology (OT) network from your IT systems and the outside world. The principle is sound. The execution is where things get complicated.

OPC UA and MQTT – the two most common protocols in modern industrial environments – were not designed to traverse a DMZ. The literature on these protocols mentions DMZ support, but it is more difficult to implement than it sounds.

This is not a theoretical problem. It’s what plant engineers discover when they try to give IT teams or cloud applications access to production data. OPC UA is too complex to make multiple hops through a DMZ architecture without introducing high latency or risk of data loss. And MQTT configurations that require multiple broker/client connections lack data consistency and reliable quality-of-service indicators across nodes, leaving users unaware of stale data.

How Tunnel/Mirroring Software Changes the Equation

The right solution is software specifically designed for multi-hop, cross-network data movement – software that initiates outbound connections from inside the OT network, carries data across the DMZ, and delivers it to IT or cloud systems without requiring any inbound firewall openings. The data gets updated in real time, and remains consistent system-wide.

Cogent DataHub software from Skkynet was built precisely for this scenario. It provides:

• Outbound-only connections from the OT network, so no inbound firewall ports are ever opened
• Encrypted data tunneling across DMZ boundaries, supporting OPC DA, OPC UA, and MQTT
• Real-time data mirroring to IT systems, SCADA, historians, and cloud platforms
• Secure remote data access for OEM partners and service vendors

The result is a network architecture that is genuinely segmented – not just nominally segmented with holes punched through it. And your OT network stays isolated. Your data still flows where it needs to go.

What a Secure Architecture Looks Like in Practice

Management at a major North American wood processing company implemented a plant-wide data collection and integration architecture using Cogent DataHub to strengthen cyber and operational resilience, without adding new infrastructure platforms. They actually ended up reducing production costs and accelerating digital infrastructure deployment as well.

Two redundant MQTT streams were connected outbound through the firewall to a DataHub Smart MQTT Broker running on a DMZ. The Smart Broker resolves and merges these redundant feeds into a single consistent data set and integrates the MES, historian, and MQTT data into a unified namespace.

This kind of architecture – outbound connections only, full isolation of MQTT data across a DMZ, and data mirroring rather than direct access, is what separates manufacturers who have meaningfully reduced their ransomware exposure from those who are still hoping their perimeter holds.

Is Your Plant Architecture Ready?

Most manufacturers don’t know the answer to that question until they’ve mapped their current connectivity. That’s the right place to start.

Skkynet and its network of channel partners can review your system architecture:

• Current OT/IT connectivity mapping
• Identification of inbound firewall exposures
• Recommended segmentation approach for your specific environment

Contact your Skkynet partner or visit skkynet.com to arrange a review. The cost of the right software is a fraction of the cost of an incident.