The difference is: - For security reasons: to protect people and assets; - For monitoring: to control your employees activity. Picking a ridiculous example:

The difference is: - For security reasons: to protect people and assets; - For monitoring: to control your employees activity. Picking a ridiculous example: if your boss tells you that you're spending too much time talking/doing a task/eating, because he as been watching you via security cameras, he will be in a lot of trouble.