Theo Nassiokas

Theo Nassiokas

Group Cyber Governance Risk & Oversight Lead
Wesfarmers Limited

Theo Nassiokas is a seasoned security professional with a 30+ year career in law enforcement & criminal intelligence, protective security, financial services, government, and consulting, Theo has educated and advised committees, executives and boards in industry and government on security and intelligence matters globally, including in Melbourne, Sydney, Brisbane, Perth, Kuala Lumpur, Singapore, Phnom Penh, Ho Chi Minh, Bangkok, Manila, Hong Kong, Tokyo, Mumbai, Bangalore, Pune, Abu Dhabi, Dubai, and London.

An acknowledged authority in security, cyber and technology risk and governance and online fraud, Theo has publicly spoken on these topics, holds an MBA (Tech Mgt) from La Trobe University and was awarded Fellow of the Australian Information Security Association (FAISA) in 2019 and part of the first cohort of FAISA awards, in recognition of his leadership in cyber and information security.

Ask me about leadership, governance and accountability

Theo Nassiokas
2026-10-15 3:50 pm
2026-10-15 4:30 pm
Ask an Expert 1

Thursday afternoon at 3.50pm, Ask an Expert 1 turns to leadership, governance and accountability with Theo Nassiokas of Wesfarmers Limited.

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Hear from the most influential leaders and experts who will discuss pressing issues and emerging trends in cyber security.

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