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Fraud Investigation, Computer/Technology Instructor
Team of Professionals
David J. Schassler:
Executive Director, Police Detective, Retired Special Agent, Nine Lives Graduate
Stephen G. Scurti:
General Manager, Police Chief, Retired FBI National Academy Graduate, Nine Lives
Retired NYPD Sergeant, 22 years experience
Supervisor of Detectives
Robbery Apprehension Module, 33 Pct.
Criminal Investigator's Course, Fraud Investigation, Computer/Technology Instructor, Criminal
Investigation Course, Anti-Terrorism Training, Homicide Investigation/Robbery Investigation
Detective: Major Case Unit, Bronx
Experience in undercover work/surveillance, Instructor in undercover work and surveillance.
Over 90 undercover narcotics buy.
Recipient of over 150 medals and received the NYPD Police Combat Cross.
CEO Lehman Brothers, N.Y.C.
David Schassler utilizes a full staff of experienced investigators, who are licensed, bonded and
Distinguished Service Award (Three)
Excellent Police Duty (Six)
Meritorious Police Duty (Six)
Certificate of Merit (Five)
Memberships and Affiliations
Nine Lives Association
Rockland County Shields (New York)
Rockland County PBA (New York)
Global International Security Services always protects the confidentiality of the client and
subject. Our surveillance division at G.I.S.S. is equipped with the latest in surveillance techniques
for getting the photos and video critical to your case.
Surveillance by experienced operatives
Video and photographic evidence
Assists in the discovery and investigation related to all types of domestic and matrimonial
Pre Marital / Prenuptial Verification
Track a Cheating Wife
Criminal / Background Searches
Matrimonial Infidelity - Lie Detection
Discovery of Hidden Assets
Marriage Partner Infidelity
For More Information Please Visit