A CEO receives an unknown call claiming that someone is stealing company trade secrets. Or an employee is planning for stealing the valuable information. Due to this problem the higher management tries to catch the suspect before their step .But how to track the faulty. In this situation many adviser suggest them to call corporate investigators. They are good source of investigation. Internal investigations are very complex. Preserving privilege is critical and employee interviews must be handled with care. They maintain the confidentiality about the cases. No news about this publishes in media or anywhere .Otherwise it can be destroy the trust of the organization. Now in Ukraine business professional using internal investigation for overcome the fault. They want to know about the employee background .They spend big amount on it .They know the value of this information. It is score the future of the business .PI use different method for finding the facts.