KordaMentha KordaMentha is an Australian advisory and investment firm that provides specialist forensic, real estate, turnaround / restructuring and investment management services. The business was formed in April 2002 by Mark Korda and Mark Mentha. Located at
Level 24, 333 Collins Street, Victoria, Australia.
Phone: +61 3 8623 3333
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Ronald Holtshausen


Perth +61 8 9220 9347

'We utilise our client’s data to help tell the whole story'

Ronald is a Director at KordaMentha in the Data Analytics service line. He has over ten years of experience in the areas of data analytics, IT security and computer forensics across a broad spectrum of industries including mining, banking, pharmaceuticals, telecommunications, construction, ecommerce and insurance.


He has also assisted as a technology expert (including the drafting of expert reports) for numerous Australian law firms and law enforcement agencies (including the Australian Federal Police and Australian Securities & Investments Commission).


In his present role he provides data analytic services relating to data analytic modelling (including litigation and dispute support), fraud or suspicious transaction analysis, business process assurance analytics (i.e. payroll or vendor analytics), data mining, data visualisations and predictive analytics. 


Prior to joining KordaMentha, Ronald’s experience was obtained by working for “Big 4” accounting firms.

Significant Engagements (for numerous S&P/ASX 100 organisations)

  • Litigation and dispute quantification or modelling.
  • Fraud/ incident analysis, suspicious transaction analytics and fraud prevention engagements.
  • eCommerce process reviews including: online banking systems, online transaction analysis (both predictive and detective analytics) and electronic payment gateway integration.
  • Business process reviews, data flow mapping and data assurance analytics. Confirming the completeness, compliance and accuracy of business and systems processing.

Independent and Consulting Expert Experience:

  • Construction sector – Development of a data analytic model (Claims Analysis Tool) to assess the validity and reasonableness of delay and variation claims in excess $900 million dollars.
  • Pharmaceuticals sector – Independent computer expert support in relation to the collection, analysis, preservation and presentation of evidence through eDiscovery.
  • Telecommunications sector - Development of a data analytic model to assess and recalculate reseller commission revenue for 22K subscribers over a period of two decades.
  • Real estate sector – Assembly and data exploration of online property listing data to assess misleading or deceptive advertising campaigns.
  • Financial Sector – Verification, system/ data exploration and calculation of class action member disbursements/ refunds regarding inappropriately calculated short term loan repayments.



  • Certified Information Systems Auditor (CISA)
  • Bachelor of Science – Computer Science
  • Bachelor of Science (Honours) – Computer Science (IT Security and Data Management)
  • Certificate III in Investigative Services.

Memberships & Publications

  • Member, Information Systems Audit and Control Association (ISACA).
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