Getting Started in OT/ICS Cybersecurity 2026 (Part 8): The Ultimate OT/ ICS OSINT Masterclass

Getting Started in OT/ICS Cybersecurity 2026 (Part 8): The Ultimate OT/ ICS OSINT Masterclass

🎙 Mike Holcomb 👥 28K 📅 September 23, 2026 ⏱ 137 min 👁 0 📄 tutorial 🧭 2026-09-23
Available in: English (current) Français

Keywords

OSINTOT securityICSShodanGoogle hacking

Summary

This video is the eighth part of a series on getting started in OT/ICS cybersecurity, focusing specifically on Open Source Intelligence (OSINT). The instructor, Mike Holcomb, explains why OSINT is critical for discovering exposed industrial control systems, given recent attacks on water facilities and Siemens PLCs. He begins with Google Dorks, demonstrating how to use the Google Hacking Database (GHDB) on Exploit DB to find exposed network diagrams and PLCs. He then covers the NSA’s ELITE WOLF project, showing how to convert Snort signatures into search strings for finding Rockwell/Allen-Bradley PLCs. The tutorial proceeds through WHOIS records, DNS Dumpster, and ASN mapping, highlighting social media OpSec failures. The core of the video is a deep dive into Shodan, including custom scripting with Smappy and Shodan Images, followed by alternatives like Censys, ZoomEye, and ICS Rank. Throughout, Holcomb emphasizes safety and the importance of not interacting with live systems. The video is a comprehensive practical guide for defenders to find exposed OT assets before attackers do.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video delivers strong practical value by demonstrating real techniques with live examples, showing how to search for exposed PLCs and HMIs using freely available tools. The argumentation is solid: he ties each technique to the overarching goal of finding vulnerabilities before attackers, using recent real-world attacks as motivation. The steps are clear and reproducible, and he provides cautionary notes about not touching live systems. The logical flow from simple Google searches to specialized engines builds a coherent methodology.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is moderate: the information is accurate and up-to-date, but it is largely experiential and based on the instructor’s own expertise. Sources cited include the Exploit DB, NSA ELITE WOLF GitHub project, and tool websites like Shodan, although not all are explicitly referenced with URLs in the video. The title aligns well with the content, which is a masterclass covering both basic and advanced OSINT techniques. There is no mention of comments analysis as none were provided.

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Title / Content Match

The title accurately reflects the content, which is a comprehensive masterclass on OSINT for OT/ICS environments, covering multiple tools and techniques.

Quality & Reliability

8/10

The tutorial provides practical, actionable OSINT techniques for discovering exposed OT/ICS assets, backed by real-world examples and current threat scenarios. The content is technical and methodical, but relies heavily on third-party tools and the author's experience, with limited verification of the claims about specific attacks.

Chapters

Cited Sources

  • Getting Started in OT/ICS Cybersecurity (OnDemand course) — Mentioned as a paid course for further learning.
  • Mike Holcomb's website — Referenced for free OT/ICS cybersecurity resources.
  • Mike Holcomb's main site — Linked for subscription and more content.

Concurring Sources

  • Shodan — Referenced as a primary tool for finding exposed OT devices.
  • Exploit DB GHDB — Source of Google dorks, including OT-specific searches.

Dissenting Sources

  • No conflicting sources identified — The video does not present controversial claims; the techniques are well-established in cybersecurity practice.

Contribution & Novelties

The video provides a unique, practical walkthrough of OSINT techniques specifically tailored for OT/ICS environments, bridging the gap between generic OSINT and industrial systems. It goes beyond basic dorking by showing how to leverage the NSA’s ELITE WOLF signatures, automate Shodan searches with scripting, and compare multiple search engines. This fills a gap in existing tutorials that rarely focus on industrial control systems.

Pour aller plus loin :

  • Shodan — The primary search engine for internet-connected devices, essential for OSINT in OT.
  • Exploit DB’s Google Hacking Database — Curated Google dorks, including OT-specific ones.
  • Censys — An alternative search engine for discovering exposed assets and certificates.
  • ZoomEye — A Chinese search engine providing global visibility.
  • NSA’s ELITE WOLF GitHub — The official repository with Snort signatures for OT detection.

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Radar Profile

The profile shows very high scores in quantity and technical level, indicating extensive detailed content. Quality and reliability are slightly lower but still strong, suggesting a practical, experience-based tutorial with some reliance on external tools. Overall, a well-balanced technical educational video.

Reliability 7/10