One of the major problems with employees these days is that they cannot be trusted as much as you did back in the day and these days it is not job satisfaction or trust that matters as much as money does. Having said that organizations are required to share confidential information with their employees and there are times when these employees back stab the organization by leaking the information to other organizations which proves to be very problematic for the company.
If you had trusted the employee, he can dupe your company for a lot of money because of leaking out vital information and then you can press charges against the employees. It is always better to press charges and not let them get away. If you are wondering how you can gather other evidence against your employees without having to go through their personal files and it is quite difficult, then you need to visit http://www.liedetector.uk/.
When you press charges you can always inform the court that you do not have enough evidence and you would like a polygraph test conducted. Although some people believe that polygraph tests are not strong enough, the truth is when these tests are conducted under expert supervision the results are very accurate and it is also considered to be strong evidence.
This evidence can support your case and in case you are employee has confessed to cheating your company, then you can get back at them with these results alone. There are a number of companies that actually conduct polygraph tests before they even hire employees these days. While an honest person will not be afraid of this test, there are people who are not that honest and they are the ones that are scared of such tests.