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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David Lehmann


Melbourne +61 3 8623 3385

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'Issues such as fraud and corruption are often complex and stressful for those involved. Listening to clients in order to understand their concerns and adopting a multi-disciplinary approach, is fundamental to providing a positive outcome. With many years of experience in law enforcement and the private sector, I am well placed to assist businesses deal with these issues.'

David is a Director in the Forensic team in Melbourne. His background is in law enforcement, specialising in fraud investigation, and has over ten years' forensic investigation and risk management experience, including with a 'Big 4' firm.
He has extensive experience in leading a wide range of projects across most major industry sectors in Australia, throughout Southeast Asia, China, India and South America. These projects included conducting fraud and corruption investigations, managing outsourced whistleblowing services, conducting fraud risk mitigation reviews, fraud risk assessment and framework reviews, implementation of fraud and physical security risk strategy, conducting code of conduct reviews, Foreign Corrupt Practice Act (FCPA) due diligence investigations and best practice reviews of functional areas of government agencies.
David regulalry presents and writes on subjects ranging from whistleblowing, fraud and corruption, procurement integrity, intellectual property protection and ethics and governance.

Significant Engagements

  • Subsidiary of an Australian transport and logisitics company. Assisted managing a team that investigated serious allegations of fraud, conflicts of interest and false accounting.
  • Hospital and Health Service, Queensland. Appointed under the Hospital and Health Boards Act 2011 to investigate concerns relating to the procurement of contract labour.
  • Local Government, NSW. Led an investigation into the procurement activities of the Fleet Services team in the council.
  • Global Resources Company. Conducted a 'Vendor Master Risk Mitigation Review' in Australia and Chile.
  • Australian Electrical Distribution Company based in Victoria. Led an investigation into the procurement of outsourced IT contractors.
  • Supplier of commercial blasting and explosives technology in Australia. Conducted a Code of Conduct Review & Evaluation.
  • Australian Steel Manufacturer. Conducted an investigation into the misappropriation of company confidential information by current and former employees.

David Lehmann_BW_Web CV


  • Graduate Certificate in Fraud Investigation
  • Diploma of Security Management
  • Certificate III/IV – Investigation Services
  • Victoria Police Detective Training School.

Memberships & Publications

  • CPA Australia – Fellow member
  • Association of Certified Fraud Examiners – Certified Fraud Examiner
  • ASIS International – Associate member.
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