For Hallcrest Systems, ILJ conducted an Internet survey of private security personnel on the potential for "insider threat" to private security. The study, done for the Department of Homeland Security, dealt with where the threats are potentially most dangerous in the many areas where security is provided by private sector companies. Building upon the experience of the earlier Internet survey of the private security, ILJ added additional techniques to increase the response rate significantly. ILJ did the statistical analysis and provided the results to Hallcrest for the final analysis and reporting.