Skip to main content
Home
Toggle menu

Chief in tech Menu

  • Chief in Tech Summit
    • Overview
    • Get Tickets
    • Merch
  • Chief in Tech Book
    • About the Book
    • Book Executive Speakers
    • Order on Amazon (US)
    • Bulk Orders
    • International Orders
    • Chief in Tech Swag
  • 100 Chief Leaders
    • 2022
    • 2023
    • 2024
    • 2025
  • Media
  • Join Network
  • facebook
  • youtube

Barbara O'Neill

Global Chief Information Security Officer at EY

  • linkedin
1516505219465.jpeg
Barbara is EY Global Chief Information Security Officer and provides strategic direction for all matters relating to information security.
She joined EY in 1997 as the Director of Information Security for Ernst & Young LLP in the US, assuming responsibility for the Americas Region in 1999. Barbara then accepted the EY Global Chief Information Security Officer role in 2002.

Prior to joining EY, she was the Vice President of Information Technology for a human resource and benefits solutions provider.
Seasoned in information security management, IT strategy, governance and audit, Barbara also held various IT positions with a leading telecommunications company.

She earned her BS in Computer Science from Saint Peter’s University and her MS in Computer Science from Fairleigh Dickinson University.

Meet More Women in Technology Leaders

  • raji-arasu.jpeg

    Raji Arasu

    CTO & EVP
    Autodesk
  • zeynep-headshot.jpeg

    Zeynep Inanoglu Ozdemir

    Chief Marketing Officer
    Palo Alto Networks
  • 1516279718768.jpg

    Susan Doniz

    Global CIO & Data Anayltics Officer
    Boeing
  • lidia-fonseca.jpg

    Lidia Fonseca

    EVP, Chief Digital and Technology Officer
    Pfizer
  • min-wang-headshot.jpg

    Min Wang

    Chief Technology Officer
    Splunk
  • sheila-jordan-1400x1400.jpg

    Sheila Jordan

    Chief Digital Technology Officer
    Honeywell
  • elizabeth-stone.jpg

    Elizabeth Stone

    Chief Technology Officer
    Netflix
  • rachel-potvin.png

    Rachel Potvin

    VP of Engineering, Data and Security Products
    GitHub
  • sunny.jpg

    Sunny Azadeh

    CIO
    GlobalLogic
  • 4pypnbn6_400x400.png

    Mindy Lieberman

    CIO
    MongoDB
All 100 Chief in Tech Leaders 2025
All 100 Chief in Tech Leaders 2024
All 100 Chief in Tech Leaders 2023
All 100 Chief in Tech Leaders 2022

The Chief in Tech Summit and Executive Women in Tech (EWIT) are powered by Women in Tech.

Chief in Tech

Privacy policy


sfy39587stp18