Licensed Security - Private Investigation & Personal Protection Agency Executive Security Services International is a licensed Canadian Security, Private Investigation and Personal Protection (Bodyguard) Agency. The one thing that sets ESSI apart from other such companies is the wealth of practical experience that our staff brings to the table. Executive Security Services International was founded in 1990, to protect clients in Canada and Abroad against theft, vandalism, kidnapping, and to provide specialized "High-Risk" Security and Investigative Services to corporate and government clients. Our staff consists of individuals who currently work globally providing high-risk security and investigative services. Our clients include: government, multinational corporations, T.V., film and celebrity personalities.