Expert leadership
Continuous IRAP experience since 2004, more than 500 students trained and over 200 endorsed assessors inform every engagement.
About OneGUARD®
Deep regulatory expertise, hands-on technical delivery and practical protection for organisations that depend on secure systems.
Setting the standard
OneGUARD® was founded in 2008 by one of Australia’s most respected and longest-serving IRAP Assessors and Trainers. For more than 15 years, we have helped define trusted cybersecurity advisory by combining regulatory knowledge with direct technical delivery across government and enterprise.
Our leadership’s network-security experience reaches back to founding involvement in the NSWC Shadow intrusion-detection project, operation of one of the first Shadow sensors outside the United States and responsibility for SANS GIAC’s Asia-Pacific incident-response operations from December 1999.
That depth now underpins one of Australia’s most experienced IRAP assessment and training practices, together with advice on the ACSC Essential Eight Maturity Model.
Call 1300 416 260Our mission
Continuous IRAP experience since 2004, more than 500 students trained and over 200 endorsed assessors inform every engagement.
We turn the PSPF, ISM, Essential Eight, SOCI Act, DISP and international obligations into practical, defensible action.
Identiblock™ and Mercury Messenger™ advance sovereign identity, encrypted communication and resilient access to sensitive information.
Leadership

Principal
Dean has spent more than three decades shaping Australian cybersecurity practice. An IRAP Assessor since 2004 and a leading trainer of IRAP assessors, he has trained more than 500 students and supported the endorsement of over 200 assessors through programs delivered first with the ACSC and now through A3C. He also leads Essential Eight assessor training and has advised on the ACSC Essential Eight Maturity Model.
Dean was a founding member of the NSWC Shadow intrusion-detection team and operated one of the first Shadow sensors outside the United States. He ran SANS GIAC’s Asia-Pacific incident-response operations from December 1999, later served as Vice Chair of the GCIA Advisory Board, and is a former SANS instructor and ISC² Asia-Pacific Coordinator.
He holds CISM, CRISC and CDPSE certifications. His early involvement in Australian networking included operating an APANA node and bulletin-board system, before 11 years of Australian Army service across transport, signals, military police and headquarters roles.

Senior Commercial Manager
Greg is a senior commercial leader with decades of experience across telecommunications, satellite communications and mission-critical network services. He works with government and enterprise organisations to shape technology strategy, strengthen trust and deliver sustainable outcomes.
Director
Eva leads bid management and client engagement, translating OneGUARD®’s technical depth into practical, well-scoped outcomes. Her commercial and relationship focus ensures each engagement begins with a clear understanding of the client’s needs.
Standards and frameworks
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