Welcome to National Surveillance and Intelligence - Technical Surveillance Counter Measures (TSCM) Firm - Sydney

National Surveillance and Intelligence (NSI) is an Australian owned Technical Surveillance Counter Measures (TSCM) Firm based in Sydney. We offer world class counter espionage solutions in Australia as well as internationally, specifically the South East Asian region. Our specialties include electronic bug sweeps and detection of listening devices; counter espionage consulting; mobile phone forensics, recovery of deleted data such as deleted SMS data recovery; and espionage risk assessment and management.

FACT: Our bug detection equipment is defence grade, not commercially available equipment.

FACT: We have conducted bug sweeps and risk assessments for some of Australia's top 100 companies, including 4 in the top 10.

FACT: Becoming a victim to industrial and corporate espionage will affect your company's share price and expose your trade secrets and intellectual property.

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Our research has indicated that corporate espionage is becoming a major threat in Australia. Simple bug sweeps are ineffective. We can assist you in securing and protecting your intellectual property and trade secrets by providing a technical surveillance counter measures solution that is second to none by our trained counter measures experts using the latest equipment and technologies available. Our electronic bug detection service is available throughout Sydney and Australia wide and internationally.

NSI also provides Live TSCM Monitoring (on or off site); analogue and digital phone system analysis, network and VoIP system analysis and sweeps; encrypted communications (Voice and SMS); Strategic Global Intelligence (country specific intelligence briefings, travel advisory reports); and a corporate investigation service that combines with our TSCM service to investigate any suspected persons. These services are available to businesses, corporations, government, high net-worth individuals and private individuals.

Government Sweeps | Corporate Office Debugging

We Secure Peace of Mind

We deliver services to businesses and individuals who want total discretion and confidentiality.

NSI is proud to announce that we are now accredited by the Specialist Corporate Intelligence Agency to provide our clients the most advanced and up to date technologies and methods for all your corporate espionage concerns. SCIA is Australia's leading corporate security agency with the specialist expertise to operate sweeping equipment and security surveillance.

Specialist Corporate Intelligence Agency Accredited


Private Investigators Sydney
| Deleted SMS Recovery

We service locations throughout Sydney, including Chatswood, North Ryde, Parramatta, Wetherill Park, Five Dock, Artarmon, Bella Vista, Penrith, Miranda, Leichhardt, Lane Cove, Double Bay, Willoughby, North Sydney, Castle Hill, Liverpool, Mosman, Mona Vale, Smithfield and every area in the Sydney Metro. We also service Melbourne, Brisbane and Adelaide and have an international reach with agents in South East Asia, New Zealand, United States of America, United Kingdom and the Middle East.

We are able to arrange counter espionage TSCM sweep teams anywhere in the world within 24 to 36 hours with teams located in Israel, Indonesia, Malaysia, Hong Kong, the USA and UK.

Our dedication to precision within our bug sweeps, data recovery, and all our services; integrity of our reporting procedures; our ethical approach; our knowledge and experience; and our honesty is paramount and our actions must return the highest credit to our clients. You, our clients, can be rest assured that we will treat your matter with absolute discretion and listen to your needs and advise you on the best course of action. Feel free to contact us for a no obligation consultation and see what sets us apart from the rest.

Click on the sites below for specific services

Electronic Bug Sweeps Sydney
Mobile Phone Deleted Data Recovery
Technical Security Consulting
Corporate Investigations Sydney

Read our Espionage Security Blog

Espionage, Security and Intelligence Blog

contact usConfidential and Discreet

Our head office is at
5 Hunter Street, Sydney.

P 02 9045 1811
Our Parramatta office is at
91 George Street, Parramatta.

P 02 8840 4221

CALL US TODAY FOR A NO OBLIGATION CONSULTATION AND SEE WHAT SETS US APART FROM THE REST

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in the media

Private Investigator Sydney
  • Security Expo 2014 - Melbourne The Australian Security Exhibition will be held in Melbourne from 2014.
  • Get Smart, Your Spy Phone Never ForgetsDeleted texts, hidden pictures and your GPS location can easily be retrieved from your smart phone. Our managing director speaks about this issue in The Daily Telegraph.
  • Blackberry Phone Security Our managing director speaks about the security features of Blackberry mobile phones in an article in Government News.
  • Read More

Who are we?

National Surveillance and Intelligence provides a confidential and discrete private investigation and intelligence service. We have over 12 years experience in the private investigator and technical surveillance counter measures areas.

Our team comprise of investigative, intelligence, legal, information technology, and counter surveillance experts.

We use the most advanced and state of the art equipment and training methods available to give you piece of mind when you need it, 24 hours a day, 7 days a week.

Click here for specialist services.

Private Investigator in Sydney