SGH Security Services is fully licensed and insured to provide Executive Protection, Security, and Private Investigator Services. Our headquarters are in Stamford, CT with offices in New York and Mexico City. At SGH, we believe that the main objective in providing quality security service is fully understanding the specific requirements and primary needs of each of our clients.company is very well versed in taking care of clients globally and has handled many major companies, events, board of director meetings, roadshows and conventions; our client list which includes many Global corporations, celebrities, dignitaries and high level executives. We specialize in Executive Protection; Workplace Violence investigations & security; Private & Dignitary Protection.