ADSAI members foster and maintain good working relations with law enforcement organizations, the media and the business community. ADSAI develops and encourages the practice of high standards of personal and professional conduct among those persons serving in the investigative and security industry.

Founded in 1933
Incorporated on September 13, 1937

ADSAI Newsletters

ADSAI Updated By Laws As Of – November 1, 2017

 Associated Detectives & Security Agencies of Illinois

ADSAI Secretary
Kathryn LeFevour
Edward R. Lefevour and Associates Ltd.
P.O. Box 5513
Chicago IL 60680-5513


ADSAI Sponsorship


The Mechanic Group is a leading private security insurance
program agent and investigator insurance program agent”


The National Council of Investigation and Security Services, Inc.Security Services, Inc., is a cooperative effort of those companies and associations responsible for providing private security and investigation services to the legal profession, business community,government and the public.

Member Since 1976


ADSAI Membership Yearly Dues


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