Today's employees are a fickle bunch. They come and they go. Sometimes they go taking a little bit more with them than when they came.
It is not uncommon for businesses to hire employees away from their competitors. Losing an employee hurts because you'll have to do interviews, find another employee, and then train them all over again. But, losing an employee can hurt even more if that ex-employee is using your trade secrets to steal your clients or copy your products and technology.
So, what can you do if an ex-employee is using your trade secrets?