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John S. Byun

John S. Byun

VP, Chief Information Security Officer

SEPHORA

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Experience28+ Years
LevelCXO

Executive Overview

I love Sephora!

Career Timeline

Professional employment history
  • SEPHORACurrent
    Nov 2008–Present· 17 yrs 10 mos
    • Vice President, Chief Information Security OfficerCurrent
      Aug 2024–Present
    • Senior Director, Cybersecurity
      May 2023–Aug 2024
    • Director, Information Security
      May 2022–Apr 2023
    • Senior Architect, Information Security
      Mar 2021–Apr 2022
    • Architect, Information Security
      Mar 2019–Feb 2021
    • Senior Information Security Engineer
      Oct 2017–Feb 2019
    • Manager, Security and Network Operations
      Mar 2016–Sep 2017
    • Senior Network Security Engineer
      Mar 2014–Feb 2016
    • Network Security Engineer
      Mar 2012–Feb 2014
    • Network Security Administrator
      Aug 2010–Mar 2012
    • Desktop Support Analyst
      Nov 2008–Jul 2010
  • BJ Insurance Services
    Sep 1998–Aug 2008· 9 yrs 11 mos
    • Owner/Agent/Broker
      Sep 1998–Aug 2008

Education

B.A.

Economics

University of California, Berkeley

Executive Relationship Map

Reports To
John S. Byun
Vice Chair & President
Chief Financial Officer
Chief Technology Officer
Chief Operating Officer

Executive Network Preview

BizKonnect has mapped this leadership network including reporting hierarchies, peer connections, and cross-functional relationships.

Verified Contact Information
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Skills & Expertise

20 of 20 skills
Windows 7NetworkingNetwork SecurityTeam LeadershipIT ManagementMicrosoft OfficeLinuxSystem AdministrationSoftware DocumentationActive DirectoryCustomer ServiceWindowsMicrosoft ExcelOutlookVisioSwitchesTroubleshootingData CenterTechnical SupportVMware