Although the responsibility for organized crime law enforcement has fallen exclusively on the government, the largest of the forensic investigative companies have a potentially meaningful role. This role is based on the resources and expertise of the forensic investigative industry. These resources include former police investigators, professional researchers, forensic accountants, intelligence analysts, industry experts, a national and international structure, and an ongoing auditing and consulting relationship with industries vulnerable to organized crime. The optimal role of the forensic investigative firm is a preventive one. This role includes working with industries to determine the nature and scope of the problem and helping them develop preventive policies and programs. Specific preventive services could include problem identification and definition, the development of policies and programs, education and training, and ongoing monitoring and intelligence gathering. These and additional services such as regulatory support could be tailored to the needs of the securities market. The preventive role would complement the largely reactive role of public police in organized crime enforcement in this country. Notes and 41 references (Author abstract modified)