OT Cybersecurity Professional Training

Master OT cybersecurity.
Defend critical infrastructure.

Practical, hands-on training built from 18 years of field experience securing industrial control systems. From Purdue and SCADA fundamentals to IEC 62443 and zero trust — without the academic jargon.

5,000+Prior students
4.55Book rating
15+ hrsVideo
14 chapters4 parts
18 yrsOT experience
What you'll learn

From fundamentals to deep protocol analysis

A progressive path that takes you from “what is a PLC?” to running a credible IEC 62443 risk assessment on a real plant.

Industrial fundamentals

DCS, SCADA, PLCs, RTUs, the Purdue model, IT vs OT, safety instrumented systems — the vocabulary you need before anything else.

OT protocols, deeply

Modbus, IEC 61850 (MMS / GOOSE / SMV), BACnet, MQTT, IIoT — what they look like on the wire and how attackers abuse them.

IEC 62443 & risk

Security levels, foundational requirements, zones & conduits, defense in depth, risk calculation — the real frameworks regulators expect.

Detection & controls

OT-aware NIDS, NGFW/IPS placement, endpoint protection, IAM & NAC, secure remote access, zero trust for plant networks.

Sector specifics

Substations and IEC 61850, oil & gas pipelines and Modbus, building management with BACnet — protocols in their native habitat.

Real engagements

Risk assessment workflow, asset visibility, capability maturity, pentest tradeoffs — the conversations you have with plant owners.

Free preview

Watch the first lesson — no signup required

Chapter 1, Lesson 1: Mission Industrial Revolution. A 3-minute look at why operational technology cybersecurity is a discipline of its own — and why most IT-trained engineers get it wrong on day one.

If the teaching style works for you, the rest of the course will too.

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Enrollment

One price, full access, no surprises

One-time payment, twelve months of access, every chapter unlocked from day one.

OT Cybersecurity Professional

Full course access

$300
USD · one-time payment · 1-year access
  • All 14 chapters, 15+ hours of video
  • Downloadable practical resources & cheat sheets
  • New material added regularly as threats evolve
  • Certificate of completion when you finish
  • Direct instructor Q&A
  • Multi-seat packages with bulk discounts for teams
3-day money-back guarantee Not what you expected? Click one button for a full refund — no questions, no email back-and-forth.
Enroll now Try the free preview

Pay securely via PayPal. Cards also accepted via PayPal.

The Book

How to be OT Cybersecurity Professional

The book the course is built on. Real-world application instead of dense academic theory — actionable, bite-sized, and proven in classrooms from Riyadh to Dubai to Amman.

4 parts 14 chapters Practical resources Austin Macauley Publishers
See where to buy
NEBRAS ALQURASHI
How to be
OT Cybersecurity
Professional
AUSTIN MACAULEY PUBLISHERS
Your instructor

Trained by someone who's been on the plant floor

Not a re-skilled IT professional discovering OT in their late thirties.

NA
Nebras Alqurashi
Founder & Lead Instructor
Nebras signature

Eighteen years securing operational technology — IT, IoT, IoMT, and OT. Senior engineer and subject-matter expert, working with the major OT security vendors and delivering field engagements for industrial customers around the world.

Author of How to be OT Cybersecurity Professional (Austin Macauley, 2023). Created the OT Cybersecurity Fundamentals course on Udemy in 2021 — 5,000+ students and growing. Certified instructor in vendor-specific OT security programs.

The training and writing here distills that field experience into something you can apply without needing me on speed-dial.

18 yrs OT/ICS IT • IoT • IoMT • OT Published author 5,000+ Udemy students
More about OTSEC
Frequently asked

Common questions, honest answers

Who is this course for?
Network and security engineers crossing into OT, control-system engineers picking up cybersecurity, and security architects who need to design for plants instead of just IT environments. If you've already spent ten years on plant floors and run IEC 62443 assessments in your sleep, you'll skim — this is for everyone else.
Do I need a background in OT or industrial systems?
No. Part 1 of the course assumes zero OT knowledge and builds up from "what is automation?" If you're comfortable with basic networking (OSI, TCP/IP, subnetting), you're ready.
How long do I get access?
One full year from the date you enroll. That covers re-watches, new material added during the year, and any updates. We'll let you know 30 days before access expires if you want to renew at a discount.
What does the 3-day money-back guarantee cover?
Anything. If within 3 days of purchase the course isn't for you, click "Request refund" in your account and you get every dollar back — no email exchange, no asking why. Read the full refund policy.
Can I buy seats for my team?
Yes. At checkout, pick how many seats you need. After payment, you'll get redemption codes you can hand out or have us email directly. Volume discounts kick in at 5+ seats.
Does the course include a certificate or exam?
A certificate of completion is automatically issued once you've watched every lesson. A graded final exam and exam-based certificate are on the roadmap — current students will get them included.
Is the content in English?
Yes. An Arabic translation may follow if there's demand — let us know.
How do I pay?
PayPal handles the payment, which also lets you pay with a credit or debit card without needing a PayPal account. We don't store any card data.
Research

NeuroTwin — OT security data, fed into digital twins

Most digital twins draw from ICS/SCADA and ignore the goldmine sitting in security monitoring tools. NeuroTwin is an ongoing project that feeds IDS-grade protocol analysis into ML models, producing twins that are predictive and adaptive — not just reflective.

Read the project brief
Get started

Ready to defend critical infrastructure?

$300 · 1-year access · 3-day money-back guarantee. No subscription, no upsells.

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