Looking For A Private Investigator?

Discreet Private Investigations in Sydney & Canberra.

Providing confidential investigations for individuals and businesses seeking the truth.

  • Are you facing a personal or business challenge that requires uncovering the truth? Perhaps you suspect infidelity, need help with a child custody case, or want to protect your business from fraud.

  • Find clarity, make informed decisions, and achieve peace of mind with NSI Global’s Private Investigation Services

The consequences of not knowing the truth can be devastating.

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Private Investigators Sydney and Canberra - Uncover the Truth with Our Expert Services!

For over 20 years, NSI Global’s Private Investigators have been providing a comprehensive range of Private Investigation Services such as:

  • Surveillance: Discreetly observe actions and gather evidence.

  • Background Checks: Uncover hidden truths about individuals or businesses.

  • Child Custody Investigations: Ensure the well-being of your children.

  • Digital Forensics: Retrieve lost or deleted digital evidence.

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Why Choose NSI Global?


Our team of specialist investigators covers all types of cases, including internet and social media investigations, serving clients in Sydney and Canberra.


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


We prioritise confidentiality and discretion, with a mutual non-disclosure agreement as part of our policy.

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

Legally Qualified Examiners and Agents

Our examiners and agents are legally qualified and understand the legal process. Our reports meet the highest legal standards.


Our expertise also includes bug detection, bug sweeping, and surveillance countermeasures.

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.

We provide private investigators in Sydney, Vaucluse, Double Bay, Mosman, North Sydney, Five Dock, Ryde, Olympic Park, Strathfield, Waterloo, Hornsby, Newcastle, Penrith, Richmond, Blue Mountains, Bowral, Wollongong, North and South Coasts, and all throughout New South Wales. We also provide private investigator services in Canberra, Red Hill, and all throughout the ACT.

Learn More About NSI Global's Best In Class Process

Trust NSI Global for Reliable Private Investigation Services

Our private investigation and surveillance expertise covers a range of critical domestic and legal cases including:

Domestic Violence

Child Custody Battles

Divorce and Family Court Proceedings

Stalking and Harassment Cases

Blackmail and Extortion Threats

Infidelity Investigations

Ready To Hire A Private Investigator?

Private Investigators: Your Path to Clarity and Peace!

  • Reveal the Truth: Unmasking Deception with Professional Private Investigators

  • Discover the Truth, Unveil the Lies: Trust Our Skilled Private Investigators

  • Your Reliable Source for Uncovering Hidden Information and Finding the Truth

  • We Are Committed to Helping You Find the Answers You Seek

Ready To Find The Truth?

Frequently Asked Questions

What type of private investigations does NSI conduct?

We can gather evidence for litigation, locate missing persons, investigate infidelity, assist in child custody disputes, 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.

I think my phone has been hacked and my car is being tracked, can you help?

If you have been the victim of data theft, sabotage, or accidental deletion, call us immediately! Our experienced Digital Forensic and Technical Surveillance Counter Measures (Bug Sweep) specialists can assist you. We are able to detect hidden tracking, listening, and optical (camera) devices as well as spyware that may be installed on mobile phones. Contact us for more information.

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.

Can NSI provide evidence for court or the Police?

We sure can. We have qualified and licensed investigation specialists that understand the legal process and can provide you legally admissible reports and act as an expert witness should the need arise.

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)

Secure your peace of mind