Abimiku, JohnIshaya, Daniel LekuYiga, Helen SadiOmaku, Sani A.S.2023-12-112023-12-112019-09-01Anderson, T. (2004, December). The earnings factor. Security management, 48(12), 36-45. Annej T Romano (11 November, 2010). Italian American in Law Enforcement. HibrisCorporation. : j Pp. 33 - ISBN 978 - 1 - 4535 - 5882-9. Retrieved 30 August, 2013, re- retrieved 11 May, j 2019 Bennett, W. W., & Hess, K. M. (2004). Criminal investigation (7th ed.). Belmont, CA: ' Wadsworth/Thompson. Bloy,jM. (2005). The Metropolitan Police. Retrieved on July 23, 2005.https://keffi.nsuk.edu.ng/handle/20.500.14448/2339The security architecture especially in the private intelligence investigation is germane and fundamental in undercover studies. This essential component in undercover security is responsible for gathering useful and systematic reliable information; make case to enable a successful prosecution, Undercover security work is a form of interactive investigation or surveillance used in conjunction with other criminal processes in tracking devices hidden information in the data recording. The study underscores an understanding of criminal intelligence investigation which is merely analytical ability of human need creative and practical abilities to succeed in their life pursuits. The study examines undercover operation, historical development of undercover investigation, risk and problems of undercover investigation, and the system of undercover security investigation. The study also, employed techniques and sources of information dissemination, rules for undercover investigation, surveillance in undercover investigation, and purpose of surveillance in security as well as the method of undercover surveillance investigation as a prerequisite for essential tool of undercover intelligence and professionalism.enUndercover, Investigation, Surveillance, Intelligence and ProfessionalismArticle