5. Defense in Depth: Why One Firewall Is Never Enough in Industrial Cybersecurity


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In the previous post, we learned how Zones and Conduits help organize industrial networks and control communication between systems.

A common misconception is that installing a firewall automatically makes a network …

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4. Zones and Conduits Explained: How IEC 62443 Organizes and Protects Industrial Networks


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In the previous post, we introduced IEC 62443 and discussed how it provides a framework for securing Industrial Automation and Control Systems (IACS).

One of the most important concepts within IEC …

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3. IEC 62443 Explained for Automation Professionals


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In the previous post, we covered the Purdue Model and how it helps organize industrial systems into levels: field devices, PLCs, HMIs, SCADA, operations, IT, and cloud systems.

Now we are …

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2. Understanding the Purdue Model: The Foundation of Secure Industrial Networks


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If you’ve ever heard terms like:

Level 0

Level 1

Level 2

OT Network

IT Network

DMZ

Segmentation

you are already hearing concepts that originate from the Purdue Enterprise Reference Architecture (PERA), commonly called the Purdue Model.

The Purdue …

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1. What Is Industrial Cybersecurity and Why Should Automation Technicians Care?


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Industrial cybersecurity is no longer a topic reserved for IT departments or cybersecurity specialists. Today, automation technicians, controls engineers, maintenance personnel, and industrial electricians interact daily with systems that are …

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