Jerrico maintains that recognizing business crime and understanding that assets are diverted at a rate equal to opportunity are the first steps toward crime prevention. It proposes that to deter crime the company must serve notice that it is not easily entered. Among deterrents are use of landscaping design and lighting. In addition, symbolic imagery is effective and requires no capital investment. If a company says all crimes that affect it will be prosecuted, it automatically embraces all the deterrence factors in existing law. The Jerrico crime prevention model focuses on organizing operation data into a format that could be computerized to include such items as location, region, loss type, date of occurrence, hour, weather, estimated loss, cash inventory, place of entry, number of persons on duty at the time of the crime, and the nature of the security equipment. Analysis of data provides information for implementing security strategies. It is suggested that although external crime prevention is critical to the success of any business, loss prevention departments would be remiss in not targeting internal objectives as well. In the Jerrico model, making external crime prevention a priority paid off and allowed a 27 percent turnaround in the reported losses during 1983-84. Moreover, the model demonstrates that a security department with limited resources can coordinate research, training, and investigative operations to ensure a satisfactory return on prevention investment. Data are presented in four graphs.