Employees can be one of your biggest business security risks. There is no foolproof prevention method for human error, and this is why employee mistakes are one of the most common causes of a security breach. So what can you do to prevent it? Well at the very least you need to include policies in your employee handbook, and ensure your employee reads through it and signs off on agreeing to follow them. Having measures in place drastically reduces the chances of a security breach. Here are four areas to keep in mind when developing your own.