Jim Guinn, II in

Jim Guinn, II

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Partner | Principal | EY Americas Cybersecurity Leader at EY
📍 Hockley, Texas, United States

Jim Guinn, II is the EY Americas Cybersecurity Leader, specializing in integrating AI and machine learning into resilient security solutions for critical infrastructure. His extensive career includes leadership roles at Accenture and PwC, focusing on cyber-physical security for IT and OT assets. People often describe him as a visionary who bridges the gap between technology and business solutions.

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Experience
36 Years
Current Role
Partner | Principal | EY Americas Cybersecurity Leader
Location
Hockley, Texas, United States
Personality Overview

How Jim shows up

Communication Style
Decision Approach
Work Preference

Behavioral traits and communication patterns that shape how this person evaluates opportunities, builds trust, and makes decisions in professional settings.

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Priorities

Topics Jim cares about

AI in Cybersecurity
Heavily involved in research and commentary on how AI makes cyberattacks more sophisticated and how it can be used to bolster defenses, especially in the last year.
OT/ICS Security
Leads initiatives to protect Operational Technology (OT) and Industrial Control Systems (ICS) in critical infrastructure sectors like energy, utilities, and chemicals.
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Career

Work history

6-2023 - 8-2025
Partner | Principal | EY Americas Cybersecurity Leader
EY
10-2022 - 6-2023
Senior Managing Director Global Cyber Industry & Cyber-Physical Security (OT/IoT) Leader
Accenture
2-2021 - 10-2022
Senior Managng Director, Global Cybersecurity Leader - Industry, Strategy & Consulting
Accenture
7-2015 - 2-2021
Global Managing Director, Group Operating Officer for Accenture Security
Accenture
6-2011 - 7-2015
US Firm Cybersecurity Leader - Energy, Chemicals, and Mining
PwC
In the press

Media appearances

Jim Guinn, EY Americas Cybersecurity Leader, shares insights on “Cybersecurity is entering a new era” (Cheddar interview). Featured in Cheddar (Facebook)
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Education
1989 - 1992
Education details unavailable
University of Houston
1987 - 1989
Education details unavailable
Santa Fe University of Art and Design
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

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