Our Operations

Established in 2016, ISDefence is South Australia’s Premier Independent Cyber Resilience company located in the Adelaide CBD.

With operations ramping up in 2019, and now having grown to into a diverse team of twenty-two industry experts. We are the largest independent, wholly South Australian owned cyber resilience company.

Our Growth

Our industry has some of the world’s largest organisations which experience continual growth with the ever-evolving technological era.

ISDefence’s growth has been organic, it has seen our company thrive. Commitment to building real and lasting relationships is our focus. These relationships ensure we deliver consistent, high quality and valued engagements with those who depend on us. Regardless of a client’s security posture or stage of maturity, we tailor our services for each milestone and objective.

Our Values

Strategically, our vision has remained the same: offer quality services. This reassures our clients that our expertise is also our passion; we believe in what we provide.

Our Independence

ISDefence has chosen to remain independent as it aligns with the way we feel in terms of credibility and integrity. Independence means we do not sell products or third-party services, and this eliminates the potential for conflicts of interest.

Business Continuity Institute (BCI) Awards 

ISDefence is led Managing Director, Yvonne Sears. In both 2018 and 2020, Yvonne was named by the BCI as the best consultant in Australasia.


Yvonne Sears
Yvonne SearsManaging Director
Grant Hughes
Grant HughesDirector
Amit Malhotra
Amit MalhotraHead of Operations


International industry standards are created as best practice by experts in their field to align outcomes with expectations.

Information Security

ISO27001  Information Security Management System

ISO27000 Series  Information Security – Supporting Guides

ISO 27005  Information Security Risk Management


PCI DSS  Payment Card Industry Data Security Standard

ISO 27035   Information Security Incident Management

BS ISO/IEC 19770-1:2017   IT Asset Management System

ASD Essential Eight

Business Continuity

ISO22301  Business Continuity Management System

ISO 27031  IT Readiness for Business Continuity


GDPR  General Data Protection Regulations

Australian Privacy Law

ISO 27701  Extension to ISO/IEC 27001 and ISO/IEC 27002 for privacy information management — Requirements and guidelines


ISO 31000  Risk Management

ISO 15489  Records Management 

ISO 9001  Quality Management System


ISO 20000  Service Management