Exploits to Explosions: Cyber Vulnerabilities That Can Kill

Ever wondered about the systems that keep the lights on?

Trulli

Most of us rarely think about the infrastructure that makes modern life possible. We flip a switch and expect electricity, turn on a tap and expect clean water, and rely on transportation, manufacturing, and energy systems to operate around the clock. Behind the scenes, a vast network of industrial technologies works continuously to keep these essential services running. These systems are collectively known as Industrial Control Systems (ICS) and form the backbone of much of the world's critical infrastructure.

What Is Critical Infrastructure?

Many things in the modern era can be classed as critical national infrastructure, or CNI. These are the life‑support systems of the modern age, including:

  • electricity and power generation
  • water and wastewater treatment
  • transport networks
  • communications and digital services
  • healthcare systems
  • industrial processes that keep supply chains moving

CNI also includes areas that are less obvious, such as:

  • logistics networks that move food and essential goods
  • data centres that keep online services running
  • chemical plants that support manufacturing
  • satellites that provide navigation and timing

All of these systems are so essential that their disruption would have a serious impact on public safety, the economy, or national security.

When you start imagining what it would mean for even one of these systems to fail, the picture becomes uncomfortable fast. Losing power, clean water, fuel, or communications is not just inconvenient; it disrupts daily life, slows emergency response, and can put entire communities at risk. It is a reminder of how much we rely on these hidden systems and why protecting them is so important.

Information Technology (IT) vs Operational Technology (OT)

So at this point you might be wondering why a cyber security training platform like GemForge Labs is talking about power plants and industrial systems. Cyber security is all about computer networks and IT, right?

Well, not quite. There is another branch of cyber security that focuses on Operational Technology (OT). OT covers the systems that monitor and control physical processes in the real world. These are the technologies that run factories, power stations, water treatment plants, transport systems, and many other parts of critical infrastructure. While IT protects data and business systems, OT protects the equipment that keeps society functioning.

Operational technology security is a niche field, and many people enter it from an engineering background, often after years of fixing, maintaining, and optimising the systems and processes that keep industrial environments running. Security professionals usually arrive from the IT side, bringing experience in networks, monitoring, incident response, and defensive operations. The strongest OT security teams are built from a mix of both groups, combining deep process knowledge with modern cyber security expertise.

Common Components of Operational Technology

There’s a lot to learn about OT security, but let’s get you started with a few basic term definitions to build a bit of familiarity.

  • What Is SCADA?
    SCADA stands for Supervisory Control and Data Acquisition. It is the system operators use to see what is happening across large or remote industrial sites and to send high‑level control commands. Think of it as the dashboard for big, distributed industrial environments.

  • PLCs, HMIs, and Other Common Components
    PLCs (Programmable Logic Controllers) are small industrial computers that run the control logic.
    HMIs (Human‑Machine Interfaces) are the screens operators use to view system status and interact with equipment.
    Sensors, actuators, RTUs, and safety systems make up the wider ecosystem that keeps industrial processes running.

  • How Industrial Devices Communicate
    Industrial devices communicate using specialised protocols and networks designed for reliability. Some use older serial‑based systems, others use modern Ethernet‑based networks, but most were not designed with security in mind.

  • Understanding Modbus
    Modbus is one of the simplest and most widely used industrial protocols. It is easy to implement and works across many environments, but it has no built‑in security, which is why it appears so often in OT security discussions.

Getting Started in ICS Security

Hopefully this post has ⚡sparked⚡ a bit of curiosity about OT and ICS. If you want to take the next step and try out some hands‑on skills, why not jump into our medium‑difficulty ICS pentesting lab?