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10 Dell security leaders
These ten Dell security leaders hold director-level cybersecurity roles at Dell Technologies, covering cyber intelligence and response, security architecture, identity and access management, vulnerability assessments and security monitoring. A reader can learn how security leaders work at Dell from people who have held the role.
Professionals to explore
01—10Ann Barry
LinkedInExperience: Director of Cyber Security · Dell Technologies
Director of Cyber Security at Dell Technologies since 2025, based in Ireland, in a team the profile says protects Dell's business, customers and data by managing cyber risk and strengthening security resilience. Ann Barry is also listed as Director of Third Party Compliance at Dell since 2019 and was Global Program Manager at Dell (2012–2019).
Colin Blackman
LinkedInExperience: Director | Cybersecurity Engineering · Dell Technologies
Director | Cybersecurity Engineering at Dell Technologies since 2022, developing and leading cybersecurity strategy across security monitoring and security data platforms, per the profile. Colin Blackman was also Sr. Manager | Cloud Security Engineering (2019–2022) and Professional Services Cybersecurity Consultant (2018–2019) at Dell.
Dale McLaughlin
LinkedInExperience: Director of Cyber Security · Dell Technologies
Director of Cyber Security at Dell Technologies since 2024, based in Austin. Dale McLaughlin also held Dell roles as Sr. Manager | Dell Services and Global Operations BUSO - Program Leader (2022–2024), Cybersecurity Incident Response Program Manager (2020–2022) and Senior Principal Systems Development Engineer (2018–2020).
Francisco Peebles
LinkedInExperience: Director, Security Monitoring Services (Cybersecurity Operations & Engineering) · Dell Technologies
Director, Security Monitoring Services (Cybersecurity Operations & Engineering) at Dell Technologies since 2022, where Francisco Peebles says they lead Security Monitoring Services, delivering the data, telemetry and detection coverage that security, compliance, legal and operational stakeholders rely on. Former CyberSecurity Engineering and Operation Strategist at Dell (2020–2022).
Joe Dowling
LinkedInExperience: Senior Director, IAM · Dell Technologies
Senior Director, IAM at Dell Technologies since 2024. Joe Dowling also held Dell roles as Vice President, Cybersecurity IAM (2021–2024), Senior Director, Cybersecurity IAM (2019–2021), Director - Identity & Access Management (2013–2019) and Senior Manager - IT Enablement Services (2010–2013).
Lester Smith III
LinkedInExperience: Senior Director Cybersecurity Intelligence and Response · Dell Technologies
Senior Director Cybersecurity Intelligence and Response at Dell Technologies since 2023, based in Charlotte. Former Sr Manager - Strategic Cyber Operations (2019–2023) and Cyber Incident Response Team Lead (2017–2019) at NetApp, and SOC Manager at the Army National Guard (2014–2017).
Marie Gilliam - CISSP, MBA
LinkedInExperience: Senior Director, Security Architecture · Dell Technologies
Senior Director, Security Architecture at Dell Technologies since 2026 and listed as Director, Security Architecture at Dell (2019–2026). Marie Gilliam was also Cybersecurity Business Unit Lead (2018–2019) and Forensics Investigator (2006–2011) at Dell, and Chief Technology Officer at SecureVP (2016–2018).
Steven Hojnacki
LinkedInExperience: Director of Vulnerability Assessments · Dell Technologies
Director of Vulnerability Assessments at Dell Technologies since 2022, after Senior Manager, Vulnerability Scanning at Dell (2019–2022). Former Senior Manager, Security Engineering and Automation at Micro Focus (2017–2019) and Manager, Product Security Automated Assurance Services at Hewlett Packard Enterprise (2016–2017).
Tom O'Sullivan
LinkedInExperience: Cyber Security Director · Dell Technologies
Cyber Security Director at Dell Technologies since 2021, based in County Clare, Ireland. Tom O'Sullivan also held Dell roles as Director - Global IT Applications & Operations (2016–2022), Director – IT Operations (2011–2015) and Director - IT - Norther & Central Europe (2007–2011). The profile describes Tom O'Sullivan as an experienced director of information technology and security.
Venkat Thoutam, CISM, CISA, CCSK, SABSA-SCF
LinkedInExperience: BUSO - Dell IT & APJC Regional CISO · Dell Technologies
BUSO - Dell IT & APJC Regional CISO at Dell Technologies since 2024, based in Bengaluru. Venkat Thoutam also held Dell roles as Director - Information Security Officer - Digital Data, Marketing & APJ (2021–2024) and Director - Product & Application Security (2019–2022).
Choose the right perspective
Match the person to the security function behind your question, since detection and response, identity, architecture and business-unit security officer roles involve different work. Check how long each person has held the Dell role and whether it covers a region or the whole company.
Questions to take into the conversation
- 01How does a global hardware company structure cyber intelligence and incident response around the clock?
- 02What does it take to run identity and access management for a large workforce and partner base?
- 03How should a security team prioritize vulnerability assessment findings across a large enterprise?
Reaching Dell security leaders
How can I contact one of these Dell security leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: Dell Technologies, based on profile data retrieved on October 15, 2026. Being listed here doesn't mean someone has agreed to take calls.
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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