Harrington Kingston Hass

Investigations     Negotiations     Intelligence     Legal Support  

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We are an investigation,

negotiations, intelligence 

legal support


Find Valuable Evidence
Identify and discover linchpin evidence and/or leverage that has the potential to fundamentally change the outcome of pre-trial mediations or trial.

Locate Critical Witness
Identify and locate witnesses that have the potential to change the odds of trial or posturing for pre-trial negotiations.

Legal and Commercial Strategy
Improving your odds at trial is not something that “in the box” legal thinking will actually deliver. You need creative and lateral ideas to completely change your prospects.Find out how we can help you win.


Our team of highly-trained professionals utilise cutting edge covert technologies combined with advanced investigative skills and quality systems to produce unparalleled results. The key reason why we are engaged by large multinational organisations, government agency’s and high worth individuals.


The success of our services is a result of the experience and training of our investigators, enhanced by state-of-the art and specifically selected equipment to ensure that the most challenging intelligence can be delivered in a time and cost-effective way.


To get the best deal – or, sometimes, any deal at all – negotiators need to think like investigators, digging for information about why the other side wants what it does. We gathering up-to-date in-depth information so our clients make better decisions. 

Legal Support

Identify and discover linchpin evidence and/or leverage that has the potential to fundamentally change the outcome of pre-trial mediations or trial. Improving your odds at trial is not something that “in the box” legal thinking will actually deliver. You need creative and lateral ideas to completely change your prospects. Find out how we can help you win.



We support complex litigation, corporate decision making, research & development efforts and government investigations. Our services include:

  • Covert surveillance
  • Intelligence & counter-intelligence
  • Negotiation
  • Mergers and acquisitions support
  • Computer & accounting forensics
  • Database searching
  • Locating persons in hiding, witnesses & high value assets

We are Australian based, however many of our campaigns are global in nature and so we deploy whatever field resources are required to deliver the campaign outcome. We often partner with respected investigation firms that we’ve worked with before to maximise our coverage, particularly during COVID-19.


Please fill out our contact form and we’ll get back to you promptly. 

About us


Harrington Kingston Hass was founded by Simon Harrington, Phillip Kingston and Stefan Hass in 2020.

Simon Harrington

Simon Harrington is a business and investigation professional with over 25 years’ experience in strategy, intelligence and counter-intelligence. Mr Harrington has extensive operational experience coupled with multiple Post Graduate qualifications. A skilled research and investigations operative delivering dependable results.

Phillip Kingston

Phillip Kingston is an engineer, entrepreneur and security professional with 16 years in business and 5 years in cyber security. Mr Kingston has experience in financial services, professional services and management in Australia and abroad.

Stefan Hass

Stefan Hass is an electronics and field operations specialist with over 8 years’ experience in the security industry and field operations in Australia.

The Partners are supported by a team of associates at Harrington Kingston Hass as well as respected investigators at reciprocal firms all over the world.


Harrington Kingston Hass takes its professional obligations very seriously including:

  • Maintaining the highest level of confidentiality, information and operational security
  • “Doing no harm”, treating others with courtesy, respect and dignity
  • Complying with relevant laws and regulations
  • Using only legal and ethical means to obtain information
  • Respecting due process, procedural fairness and natural justice

Each operative at Harrington Kingston Hass undertakes significant education and field training to ensure they understand and comply with changing laws and community expectations.

Complaints or concerns in respect of the conduct of our operatives should be directed to our contact centre.


Our Latest


Harrington Kingston Hass was retained to investigate board-level confidentiality breaches to a media outlet which was part of a suspected upcoming shareholder activist campaign. Our carefully planned operation resulted in the shortlist of suspects each being given traceable and unique information so the leak could be identified via back-tracing. The suspect was then directly approached and admitted to his involvement in the confidentiality breaches, and was removed from the board.  2021

In a recent assignment, Harrington Kingston Hass needed to ensure that a client’s spouse was able to get to and from their children’s school safely and discreetly during a period of heightened media attention and public scrutiny. We worked with the client and their chauffeur to develop alternative transit routes as well as providing training on counter-surveillance and defensive driving techniques.  2021

In support of a recent sensitive M&A transaction, Harrington Kingston Hass assisted the buyer discreetly surveil the key management personnel of the target company to determine if they had any undisclosed anti-social conduct and/or potentially risky behaviours such as drug or gambling addiction that might affect the buyer’s brand or create risk as part of a pre-completion due diligence checklist.  2020

A logistics CEO retained Harrington Kingston Hass resulting from accounting reports that contained discrepancies. The client suspected a connection between the financial discrepancies and accounts payable staff. After installing surveillance equipment and conducting further internal investigations, Harrington Kingston Hass revealed that a financial control manager of 8 years had skimmed money from the client’s business to fund a side business he was starting. This evidence empowered the client to stop the unlawful skimming and seek legal remedy – $105,000 has since been recovered.  2020




Be the one with the best information


Win cases


Gain leverage


Secure your position


Protect your interests