A loss prevention investigator is a security specialist that works to prevent shoplifting and employee theft within a business. Your main goal is to prevent “shrinkage,” the industry term for a preventable business loss caused by human actions. You monitor surveillance cameras, review security footage, and walk the store in plainclothes to prevent shoplifting. You might also work with the security manager to develop a more effective security plan for the establishment. The career does not require a specific education, but many employers prefer a background in security and criminal justice.