What does a French military fortification from the 1930s have to teach us about OT cybersecurity? Quite a lot, actually.

In this episode of Cyber Brews, we take a trip back to the Second World War and explore the story of the Maginot Line a hugely engineered defensive system that largely worked as designed, but failed to stop the attack because the attacker didn't follow the route its designers expected.

We explore what this can teach us about modern OT and industrial cybersecurity, including why having a firewall doesn't mean you have a security strategy, why defence in depth is about more than simply adding more security products, and why organisations need to plan for what happens when a control fails.

We discuss:

• Network segmentation, zones and conduits
• Identity, authentication and least privilege
• Physical and application security
• Monitoring, detection and incident response
• Recovery, resilience and maintaining safe operations
• And perhaps most importantly challenging the assumptions behind our security strategy.

Because the lesson of the Maginot Line isn't that walls don't work. It's that a wall is only useful if you've thought about what happens when someone gets around it.

So grab a brew and join us for another Cyber Brews story.

Series 3 - Episode 5

In this episode of Cyber Brews, we explore how Remote Access fits into the IEC 62443 standard and discuss the different approaches organisations are using to securely connect to their OT environments.

We cover topics including:

▪️ The different types of OT remote access and why it's much more than simply using Remote Desktop (RDP)
▪️ The advantages and disadvantages of common remote access technologies
▪️ How secure remote access supports maintenance, vendors and operational teams
▪️ Where remote access fits within the principles of IEC 62443
▪️ Practical considerations for reducing cyber risk while maintaining operational availability

Whether you're an engineer, asset owner, system integrator or cybersecurity professional, understanding how to implement secure remote access is becoming increasingly important in today's connected industrial environments.

☕ Grab a brew and join us as we explore one of the most critical topics in OT cybersecurity.

Series 3 - Episode 4

In this episode of Cyber Brews, we dive into IEC 62443-2-1 Edition 2 and explore what the updated standard means for organisations building and managing cybersecurity programs within industrial and OT environments.

We discuss the difference between a Cybersecurity Management System (CSMS) and a broader Security Program (SP), why the terminology matters, and how the latest edition of the standard is evolving beyond traditional compliance thinking.

The episode also covers:

▪️ What the IEC 62443-2-1 security program is designed to achieve

▪️ The biggest changes introduced in Edition 2

▪️ How the standard impacts different stakeholders across industry

▪️ What engineers, site owners, OT teams, and process safety professionals should be thinking about moving forward

As industrial cyber security continues to mature, organisations are increasingly being asked to demonstrate not just technical controls, but governance, ownership, and long-term resilience.