Free course · Cybersecurity
OT and ICS Cybersecurity with ISA/IEC 62443
Free OT security course for automation and IT staff: Purdue zones, ISA/IEC 62443 security levels, risk assessment. The certificate is optional and paid.
Free to learn. Verifiable certificate £19 when you pass the final exam (optional, VAT included).

Sample certificate. Optional, issued when you pass the final exam.
- Level
- Intermediate
- Modules
- 16
- Video
- 52 hours
- Price
- Free
Outcome
What you will be able to do
Explain how ICS and OT differ from IT security, map a plant with the Purdue model into zones and conduits, apply ISA/IEC 62443 security levels and requirements, run a cyber risk assessment, build an asset register and vulnerability programme, plan incident detection and response, manage a security programme and prepare for ISA/IEC 62443 certification exams.
- Explain OT versus IT security and the threat landscape
- Map plants with the Purdue model into zones and conduits
- Apply ISA/IEC 62443 parts, roles and security levels
- Run risk assessments and build asset registers
- Manage vulnerabilities, incidents and a security programme
- Prepare for ISA/IEC 62443 certification exams
Software
None required. Free tools shown in the lessons are optional.
Hardware
None required.
Syllabus
16 modules
Each module has video lessons, notes and a short quiz. The final exam closes the course.
- ICS/OT Fundamentals and the Threat Landscape4 lessons
- The OT Security Domain: People, Process and Technology1 lesson
- Control Systems and Industrial Protocols1 lesson
- The Purdue Model, Zones and Conduits3 lessonsLab
- Secure Network Architecture and Remote Access1 lessonLab
- The ISA/IEC 62443 Series4 lessons
- Security Levels and Foundational Requirements3 lessonsLab
- Risk Assessment and Threat Modelling4 lessonsLab
- Asset Registers and Inventory1 lesson
- Threat and Vulnerability Management and OSINT2 lessonsLab
- Incident Detection and Response1 lessonLab
- Standards, Governance and Programme Management6 lessons
- Implementing 62443 and Securing Wireless Networks4 lessons
- OT Security Assessment, Penetration Testing Basics and Course Review2 lessons
- ISA/IEC 62443 Certificates and Exam Preparation8 lessons
- Final Assessment1 lesson
How it works
How this course works
- Watch the video lessonsOne module at a time, at your own pace.
- Take the module quizA short quiz at the end of each module shows what stuck.
- Keep your notesWrite in My notes beside each module and ask the trainer if you are stuck.
- Practise in the labOptionalTry a task from the module in the EDWartens Lab, in your browser.
- Sit the final examPass it once you have been through the modules.
- Certificate, if you want oneOptionalPaid, and only after you pass. Anyone can check it online.
EDWartens Lab
Practise this in the EDWartens Lab
Map a plant network, find the odd device and set deny-by-default firewall rules in the Lab's OT security simulator.
Works alongside OT and ICS Cybersecurity with ISA/IEC 62443. The Lab is ot security practice in your browser: no install, no hardware, free to use. Sign in as a learner and it opens with your account.
Levels to try with this course
OTS-01 · OT security lab
Map the plant network: put every device on its level
Open in the lab (opens in a new tab)OTS-02 · OT security lab
Zones and conduits: split a flat network
Open in the lab (opens in a new tab)OTS-03 · OT security lab
Firewall rules: the minimum, then deny by default
Open in the lab (opens in a new tab)OTS-04 · OT security lab
Remote access: the vendor comes in through the DMZ
Open in the lab (opens in a new tab)
Optional. Skip it whenever you like: it never blocks your progress or your certificate.
Why practise in a lab
Technical work is judged on what you can do: wiring, commissioning, finding a fault. Doing a task yourself teaches more than watching it a second time, and a lab lets you try it safely before you meet real equipment. It does not replace working on real hardware.
- Practise safely, so a mistake costs nothing.
- The lab checks your work like a site test, so you know when it is right.
- Free, in your browser, with nothing to install.
Certificate
An optional certificate when you pass
Learning is free. Pass the final exam and you can have a certificate for £19, including VAT, with a number employers can check online. It records that you completed a free online course; it is not a regulated qualification or a CPD certificate.
- Your name, the course, its study time and your final exam score
- A unique certificate number and a QR code to its verification page
- Issued by Wartens Ltd; add it to your LinkedIn profile in one click
- Pay now or after you pass: it is issued the moment you pass the final

Credits
Who made the lessons
The video lessons belong to their creators. EDWartens wrote the study plan, notes, quizzes and the final exam.
- Mike Holcomb
the Getting Started with ICS/OT Cyber Security full course
- Faceless Security
the OT/ICS introduction modules
- CBOOMARANK
the ISA/IEC 62443 full course
- A LV
the IEC 62443 webinar collection
- Manjunath Hiregange
the ISA/IEC 62443 mock tests
Questions
About this course
What is IEC 62443?
What ISA/IEC 62443 certifications are there?
Is this a hacking course?
Who is it for?
How long is it?
Is the course really free?
What certificate do I get, and is it a vendor qualification?
Who made the video lessons?
Do I need any software or hardware?
Want a live class and career support?
The Professional Module is five live days of Siemens PLC, HMI and SCADA with an instructor, then a resume session and a CPD certificate.
