Jeff Williams in

Jeff Williams

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Chief Information Security Officer at Sigma360
📍 Seattle, Washington, United States

Jeff Williams is the Chief Information Security Officer at Sigma360, leveraging extensive experience from roles at AWS, Avast, and Microsoft. He architects global security and privacy programs and holds a CISSP certification. Colleagues describe him as an innovative, strategic, and intellectually curious leader.

He is passionate about developing talent and is considered an excellent manager who genuinely cares about the career paths of his team members. Known for his professionalism and great sense of humor, he has been a tireless champion for security and privacy for over fifteen years.

Unique fact: Jeff received a commendation for his direct participation in the successful takedown of the Rustock botnet, a major cybercrime operation.

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Experience
7 Years
Current Role
Chief Information Security Officer
Job Level
Leadership
Location
Seattle, Washington, United States
Personality Overview

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Communication Style
Decision Approach
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Priorities

Topics Jeff cares about

Cybersecurity Leadership
Serves as a Senior Academic Scholar and Visiting Lecturer for the Cybersecurity Leadership Program at Duke University, teaching the next generation of leaders.
Global Security Strategy
He is responsible for developing and elevating security strategy, managing risk, and ensuring regulatory compliance in his executive role at Sigma360.
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Career

Work history

8-2025
Chief Information Security Officer
Sigma360
6-2022
Senior Academic Scholar and Visiting Lecturer
Duke University Sanford School of Public Policy
1-2023 - 8-2025
Senior Principal Security Engineer
Amazon Web Services (AWS)
1-2021 - 12-2022
Global Head of Security (Policy | Projects | Architecture)
Avast
5-2018 - 1-2021
Chief Strategy Officer
FiveBy Solutions
In the press

Media appearances

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Education
6-2022 - 6-2022
Cybersecurity Leadership Program
Duke University Sanford School of Public Policy
BA
Bennington College
Social presence
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Behavioral profile

DISC profile (public)

DISC behavioral profile

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