David Schassler is the owner of one of the most prominent private investigation companies in the United States. He's been in the business for over 15 years and his experience and expertise with discrete investigations is unparalled. David Schassler is said to be not only top notch, but his company, Global International Security Services, is the finest investigation agency nationwide.

"If you are looking for a Private Investigator you have come to the right place. But don’t worry if your not in New York or Los Angeles, we more than likely can still handle your Investigation. We take your investigative needs very seriously at Global International Security Services. Our commitment to our clients is unparalleled in the investigative industry. If you are looking for help catching a cheating spouse, performing background checks for your company, performing asset checks, dealing with Child custody issues or conducting any type of matrimonial investigations, then we are the firm you've have been seeking! Your concerns and investigative needs will be taken care of throughout the investigating process by our highly trained and dedicated staff. Background checks and criminal searches are also services that we can provide catering to the client's needs. We specialize in every aspect of Investigations so we are your one stop agency. So whether it be a surveillance, voice stress analysis, lie detector test, counter surveillance, corporate security, skip trace, domestic investigation, executive protection, explosive or narcotic detection, or even a hidden camera, Global International Security Services will handle the Investigation for you!"


David Schassler