About

Radius Investigations, centrally located on Long Island in Hauppauge, NY, was formed in 2007 by Matthew Seifer, a licensed private investigator with over 26 years of experience in the field.

Radius Investigations has established itself as a leading force in surveillance, insurance investigations, and security services; coupled with expertise in corporate due diligence and background investigations, security consultation, litigation support, fraud, and internal investigations. Our firm has an experienced and diverse team of investigators, ranging from retired law enforcement, legal practice, and military service, available in New York, nationwide, and around the world.

You can expect nothing less than sensitivity, confidentiality, thoroughness, expertise, professionalism, and integrity in services from Radius Investigations. We take great care and pride in our cases; We do everything possible to reach a resolution to your case.

Radius Investigations helps law firms, companies, religious institutions, and individuals solve problems, advance business opportunities, mitigate risk, win or avoid lawsuits, and resolve disputes. Our services include:

  • Litigation and Pre-litigation Intelligence and Investigations- White Collar- Commercial- Matrimonial, Divorce, and Child Custody- Financial
  • Missing Person Location and Witness Interviews
  • Surveillance
  • Asset Searches and Analysis
  • Internal Corporate Investigations

 

  • Audit and special Committee Investigations
  • Foreign Corrupt Practices Act and anti-money Laundering Investigations and Compliance
  • Business and transactional Intelligence
  • Due Diligence and Background Checks
  • Fraud Investigations and preventative Consulting
  • Hedge Fund Investigations
  • Intellectual Property, Counterfeiting, Piracy, and Technology Investigations
  • Subpoena Compliance consulting

Matthew Seifer
Licensed Private Investigator, Armed Protection Specialist, and Technical Surveillance Countermeasure Specialist

Matthew Seifer has been a self-employed business owner since his honorable discharge from the United States Army in October of 1990. In over 26 years of private sector experience, Matthew has earned a reputation for professionalism and integrity. As a result, he has established long-standing relationships with law enforcement, government personnel, the legal community, the insurance industry, and clients from all over the globe.

Matthew has been responsible for handling a wide variety of sensitive and complex investigations, including covert surveillance, undercover investigations, locating missing persons (including witnesses and adversaries for service of process), and securing key evidence for trial preparation. Matthew is also an accomplished investigative case manager and leader for teams of expert investigators. He has a great deal of expertise in assembling and managing teams of specialists representing a wide array of investigative skill sets in order to pursue the clients’ objectives in the most efficient and effective manner possible. Matthew’s investigative support teams include retired law enforcement, military personnel, computer forensics experts, and counter-surveillance specialists. Matthew has developed a network of specialized investigators in all 50 states in order to ensure that Radius Investigations can respond to our clients’ needs anywhere in the country.

Matthew is Radius Investigations’ counter-surveillance and technical surveillance counter-measures (TSCM) or “bug sweeping” expert. He leads the firm’s operations in searching for, identifying, and neutralizing all forms of covert surveillance which may intrude on our clients’ privacy, including GPS trackers, hidden cameras, and “bugs” or hidden recording devices.

In addition to his extensive investigative skills, Matthew is a licensed armed security guard in New York. He has extensive training and expertise in threat assessment, executive protection, event security, and premises security operations. Matthew provides expertise in not only his practice, but to aspiring private investigators and security guards. He is certified to teach armed guard security training through the NYS Division of Criminal Justice Services and provides private instruction on becoming a licensed private investigator.

 

IN THE NEWS

Mastic Beach hires Radius Investigations to determine why some village records are unaccounted for

 

Mastic Beach: Former official ran illegal background checks

 

The Village of Mastic Beach hired Matthew Seifer to investigate how computer files and documents were stored in their offices to account for missing files. Through Seifer’s diligent and thorough investigative work, he discovered a breach in security that a former employee had illegal access to social security numbers and criminal records. using search engines reserved for law enforcement by posing as a police officer in the application to access the data. This former official conducted background checks on over 400 village residents, including local political figures and their families.

 

Private eyes using drones to nab scammers and cheating spouses

 

Matthew was interviewed by the NY Post on how aerial drones can be used by private investigators, noting several cases done by Radius Investigations where having drones proved to be a game changer in gathering information. Seifer is continually building up his knowledge in utilizing the latest technology for investigations and security.

 

COMMUNITY INVOLVEMENT

Matthew believes in volunteering his personal and professional time to the community. He has been a long standing member of the Lions Club International and has been honored with the prestigious Outstanding Leadership and Achievement Award from the Lions Club International President.

For more information about Radius Investigations, please feel free to contact Matthew at m.seifer@RadiusInvestigations.com, or you can contact Matthew directly at 631-492-4000.

Ready to find out more?

For more information about Radius Investigations,

contact an investigative professional at info@radiusinvestigations.com,

or call us directly at 631-351-6473 or toll-free at 888-698-0077.


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Radius Investigations Inc

150 Motor Parkway, Suite LL20,

Hauppauge, NY 11788

1-888-698-0077

 FREE CONFIDENTIAL CONSULTATION

LICENSED, BONDED & INSURED

VETERAN OWNED AGENCY

AVAILABLE 24/7

 

 

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