The Association of Certified Fraud Examiners Intl., established in 1988, is a worldwide organization composed of about 20,000 professional members and is regarded as the largest anti-fraud organization in the world. The association is dedicated to the prevention, detection and deterrence of fraud and white-collar crime. Most members are lawyers, CPAs and Investigators.
http://www.cfenet.com

The goal of the APA is to provide valid and reliable means to verify the truth by promotion of research into instrumentation and techniques and by the improvement of the qualifications of polygraph examiners through high standards of professional ethics, conduct, education and achievement.
http://www.polygraph.org

The World Association of Detectives is an association of private investigators and security service organizations all over the world. It was formed in 1925 to promote and maintain the highest ethical practices and trust of the private detective and investigative profession and to foster and perpetuate a spirit of cooperation among its members and similar organizations. In addition, it endeavors to further and to establish a mutual feeling of trust, goodwill and friendship.
http://www.wad.net

The American Society for Industrial Security, International was founded in 1955 with over 30,000 members worldwide. It is a society of professionals with security responsibilities in industry, business and government. ASIS is dedicated to increasing the effectiveness & productivity of security professionals by developing educational programs & materials that focus on both the fundamentals & the most recent advancements in security management.
http://www.Asisonline.org

The Philippine Association of Detective and Protective Agency Operators, Inc. was formed in 1958. It aims to promote professionalism among members in a variety of means and these include conduction of seminars, provision of consultancy and supplementation of resources.