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Our Expert Investigators Deliver Exceptional Results

  • Are you struggling with unanswered questions, potential fraud, or security breaches that threaten catastrophic losses to your business or assets?

  • Our seasoned investigators are results and handpicked from the best in the industry. They are armed with cutting-edge technology and unparalleled resources. When you choose NSI, you choose excellence.

  • Our meticulous investigations provide concrete evidence presented in detailed reports prepared to a legal standard. Our investigations provide peace of mind, confidence, and clarity.

  • Ready to take control and protect your business? Contact our team today for a confidential consultation.

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Choose NSI Global For Trusted Corporate Investigation Services


Our team of specialist investigators covers a wide range of cases, including internet and background checks, due diligence checks, and more


NSI Global is trusted by major clients include Government Departments, Law Enforcement Agencies, IT Companies, Banks, Law Firms and Multinational Corporations.


Confidentiality is a top priority, as evidenced by our confidentiality and mutual non-disclosure agreements we put in place with our clientele.

Secure Office

Unlike others, we have an office you can visit. Our secure office located in Sydney Olympic Park provides a safe space for meetings

Litigation Support

We offer litigation support in the form of legally qualified investigators, expert witness testimony, and more.


Our expertise extends to the detection of listening devices, tracking devices, hidden cameras, spyware detection, and the detection of interception of mobile phones.

Trusted Investigators with Proven Results

Due to NSI Global’s long-standing historical track record of innovation, we have developed strategic proprietary investigative processes and comprehensive methodology to best collect, document, and present the evidence required for your case.

Learn More About NSI Global's Best In Class Process

NSI Global Investigates All Workplace Fraud

Intellectual Property Theft

Counterfeiting and Piracy

Cyber Security Breaches

Workplace Harassment

Workers Compensation Fraud


Money Laundering

Misconduct and Malfeasance

Sanctions Violations

Antitrust Violations

Industry Regulation Breaches

Client Testimonials

  • “Their thorough investigations helped us identify and address fraudulent claims promptly, allowing us to save valuable resources. Their team’s professionalism and attention to detail left a positive impression on everyone in our department. We appreciate their expertise and highly recommend their services.” – Michael R., Claims Assessor

  • “I couldn’t believe how thorough your team was during the insurance investigation. They saved us from a potentially costly payout to a fraudulent claimant.” – Sarah K., Insurance Claims Manager

  • “As a lawyer handling complex cases, having reliable investigators I can call upon is essential. NSI Global have been my go-to choice for years. Their in-depth analysis and attention to detail have played a significant role in securing favourable outcomes for my clients. I trust them implicitly, and they have never let me down. Their expertise is unmatched, and I highly recommend their services to anyone in need of reliable investigative support.” – Jessica R., Family Lawyer

Contact us now to speak with one of our experienced investigators.

Frequently Asked Questions

What type of corporate investigations does NSI conduct?

We can gather evidence for litigation, locate missing persons, workers compensation investigations, corporate fraud investigations, workplace theft investigations, and conduct background checks, just to name a few.

How do you ensure my information is going to he kept confidential?

We deal with extremely high-touch and sensitive clients, including government and law enforcement agencies. All of our staff sign non-disclosure agreements and we also have a policy to put a mutual non-disclosure agreement in place for our new clients, so that you can rest assured your information is safe with us.

How long does it take to uncover evidence and how much does it cost?

It is difficult to say how long it would take to uncover evidence. It will depend on how the investigation is structured and how much information we are able to start with. Our consultants can provide you with an estimate of time and cost during a consultation.

Am I able to hire an investigator if there is an AVO on me?

No, you can’t. If there is an AVO, ADVO, or other court order in place preventing you access to the person you want to investigate, then you are not able to hire an investigator to follow that person.

What other corporate security services does NSI perform?

Our range of corporate and business services includes technical surveillance counter measures (electronic bug sweeps), digital forensics, deleted data recovery, spyware, and cellular interception detection, cyber security, and information security services.

Can you use GPS tracking?

At NSI we utilise physical private investigation. We do not use GPS trackers as it is a breach of the Surveillance Devices Act, thus making it an offence. Individuals or companies that use these without the person’s express or implied knowledge will be breaching this Act.

Industry Heavyweights and Government Departments Trust NSI Global

You can have the same peace of mind.

We invite you to make an appointment for a confidential discussion at our radio shielded, secure office in Sydney Olympic Park. This location is under 24 hour surveillance and has been fortified against bugging technology to ensure your privacy.

NSI Global will not interfere nor accept any job or assignment for a client that is the subject of any law enforcement investigation.

1300 000 NSI (674)

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