Need help?


Not sure if you have a problem? Get in touch, we’re here to help.


Call us on 1300 027 401


Or send us a note here.

Our Vision

Who We Are

Sicarius is a global leader in Digital Forensics, Incident Response, and Pre-Breach Services that are tailored especially for small to medium-sized businesses. We have earned our stripes as experts in Digital Forensics and Incident Response (DFIR), delivering cutting-edge services to a diverse clientele spread across the globe.


Our Passion for Uncovering Truth

We believe that behind every piece of data, there is a story waiting to be told. Whether we’re assisting law enforcement agencies, partnering with NGOs, supporting multinational corporations, or empowering private sector entities, our mission remains the same: to uncover the truth and ensure unwavering security.


Global Reach, Local Impact

Spanning over 30 countries across 5 continents, our hands-on experience has taken us to the far corners of the world. We transcend borders, bringing our expertise to diverse cultures and industries. Our impact is tangible, felt not only in boardrooms but also in courtrooms across Australia and Asia.


Why Sicarius

Sicarius isn’t just a service provider; we are your digital allies. We understand the paramount importance of safeguarding your digital assets, and our commitment to excellence is unwavering. Our services are driven by cutting-edge technology, a wealth of experience, and an unrelenting dedication to your security and success.

Empowering Australian Businesses Against Cyber Threats

At Sicarius, we’re deeply committed to addressing the growing cybersecurity challenges faced by Australian businesses, especially small to medium-sized enterprises (SMEs). Australia has become a prime target for cybercriminals, and the consequences of an attack can be devastating, particularly for SMEs.


Project Sentry – Your Shield Against Cyber Threats

To combat this threat, we’ve launched “Project Sentry”, a community-driven initiative aimed at arming SMEs with the knowledge and strategies they need to prevent cyberattacks. Our information pack contains proven strategies that can significantly reduce the risk of falling victim to a successful cyberattack. Business owners and managers can request a complimentary copy of this resource to assist in fortifying their defences.


Tailored Compromise Assessment for SMEs

We understand the importance of proactivity in the face of cyber threats. That’s why we’ve developed an affordable compromise assessment service specifically tailored for small to medium-sized Australian businesses. This service assesses whether any breaches have occurred, providing businesses with essential insights into their cybersecurity posture.


By leveraging our compromise assessment service, SMEs can not only gain invaluable information about their security but also instill confidence in their stakeholders, partners, customers, and supply chains regarding their cyber resilience.


At Sicarius, our vision extends beyond providing top-tier Digital Forensics, Incident Response, and Pre-Breach Services. We’re dedicated to creating a safer digital landscape for Australian businesses, ensuring they thrive in an increasingly digital world.

Mark Whittley Managing Director of Sicarius

Mark Whittley

Co-Founder & Managing Director

With over 30 years of IT and Digital Forensics experience, Mark has worked in State and Federal Law Enforcement agencies such as the Office of Police Integrity and the Australian Federal Police, Non Government Organisation (NGO) The Global Fund in Geneva Switzerland, as well as multinational Novartis Pharmaceuticals, providing first class Digital Forensic services globally and supporting some of the most complex investigation types possible.


Mark has also been a trainer at the Institute for International Criminal Investigations at the Hague, Netherlands, providing Digital Forensic instruction for Investigators working for the International Criminal Court.

Chris Witham Director of Operations Sicarius

Chris Witham

Co-Founder & Director of Operations

Over 20 years Chris has honed his skills across a wide variety of IT disciplines, including systems administration, IT security, digital forensics, risk and compliance, and incident response. Chris has provided first-rate digital forensic services for cutting edge organisations in federal law enforcement and private enterprise, both locally in Australia and Internationally. His resume includes working with the Australian Federal Police, Blackpanda and KordaMentha, supporting sophisticated, and at times high-profile investigations.


Chris holds a Masters in Information Technology: Networking and Systems Administration.