What You Will Learn
- Explain what ICS is and how its design priorities differ from standard IT systems
- Map the five levels of the Purdue Model and place any ICS component within it
- Distinguish between PLC, HMI, SCADA, DCS, and RTU by function and where each sits in the architecture
- Trace the path of a sensor reading from a field device through to an enterprise system
- Name the major industrial communication protocols and explain what problem each was built to solve
- Describe how industrial networks differ from IT networks in timing, failure tolerance, and physical environment
- Identify the structural gaps in ICS architecture that make cybersecurity a distinct engineering challenge
- Enter the paid ICS/OT Cybersecurity Fundamentals course with the foundation it assumes you already have
Requirements
- No prior knowledge of industrial systems required
- A general technical background in engineering, IT, or operations is helpful but not required
What This Free ICS Course Covers
You work in engineering, IT, or a technical role and industrial control systems keep coming up. In job postings, in meetings with OT colleagues, in documentation you are expected to understand. You know your own domain. But when the conversation turns to PLCs, SCADA, or OT networks, you are reasoning from the edges of what you actually know. ICS has its own language, its own priorities, and its own logic, and there has never been a convenient place to pick up the basics without formal training.
This course covers three areas: what ICS is, the components that make it up, and the industrial networks it runs on. Each section builds on the one before it. You will leave knowing what a control system is, how its components connect, and why the engineering decisions made decades ago still shape the security problems that OT teams deal with today.
The course is free because the foundation layer of ICS knowledge should not sit behind a paywall. It is the prerequisite that most ICS cybersecurity training assumes you already have.
If you want to go further, the paid ICS/OT Cybersecurity Fundamentals course on Udemy picks up exactly where this one ends, covering the threat landscape, IEC 62443, zone and conduit design, and incident response for environments where availability comes before everything else.
This Course Includes
- 25 on-demand lectures
- Free access — no payment required
- Self-paced — learn on your own schedule
- Available on desktop and mobile
- 6 multiple-choice quizzes included in the Moodle course
Who This Course Is For
- IT professionals moving into OT or operational technology roles who need a working understanding of what they will be securing
- Engineers handed cybersecurity responsibility who need the ICS vocabulary before tackling security standards or frameworks
- Students building toward ICS cybersecurity roles who want a solid foundation before taking paid training
- Project managers and consultants who work alongside OT teams and need to follow technical discussions without guessing
Course Curriculum
- 25 on-demand lectures
- Free access
- Self-paced
- Desktop and mobile
- 6 multiple-choice quizzes included in the Moodle course