Building a Resilient World:

Welcome to the official blog of the ISA Global Cybersecurity Alliance (ISAGCA).

This blog covers topics on automation cybersecurity such as risk assessment, compliance, educational resources, and how to leverage the ISA/IEC 62443 series of standards.

The material and information contained on this website is for general information purposes only. ISAGCA blog posts may be authored by ISA staff and guest authors from the cybersecurity community. Views and opinions expressed by a guest author are solely their own, and do not necessarily represent those of ISA. Posts made by guest authors have been subject to peer review.

Hal Thomas

Hal Thomas

Hal Thomas, a self-employed consultant, HWT Consulting LLC. He was formerly an Engineering Associate - Process Safety at Air Products for over 36 years. He received a BSME from Bucknell University, is a registered professional engineer in the state of PA and is a certified functional safety expert, CFSE. Prior to becoming a process safety engineer and being involved in cybersecurity for control systems, he was a process control engineer. He has participated in several industry initiatives involving the Center for Chemical Process Safety (CCPS), ISA84 and ISA99. He currently participates in ISA84 technical report working groups and co-chairs WG9 responsible for TR84.00.09, Cyber Security Related to the Safety Lifecycle, as well as participating in a number of ISA99 working groups and co-chairing WG7 that is intended to address the intersection of security and safety. During his career, he has authored and co-authored a number of papers dealing with aspects of risk assessment, including cybersecurity.

Recent Posts:

White Paper Excerpt: Leveraging ISA 62443-3-2 For IACS Risk Assessment and Risk Related Strategies

This document is intended to provide the reader with an overview of ISA 62443-3-2, “Security Risk As...
Hal Thomas Jun 22, 2021 12:00:00 PM

Getting Started With Cybersecurity Risk Assessment: When It’s Not About Information Technology

In any industry that uses industrial automated control systems (IACS), the potential consequences du...
Hal Thomas May 11, 2021 5:30:00 AM

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