Take proactive measures to prevent and detect fraud in your company. Consider installing and monitoring security cameras in and around the outside of your business. If you provide company vehicles to employees, consider installing a vehicle tracking system to monitor the location of each vehicle. Compare the service calls or delivery stops made during the day to the vehicle tracking printout at the end the day. Question any suspicious stops that were not part of that day's route. Have the tracking system send you an e-mail alert if the vehicle strays outside of its designated territory.