You probably know that offering your customers free Wi-Fi is one of the smartest business decisions you made. Wi-Fi access can significantly increase customer satisfaction, sales and even brand ambassadorship for your business. However, all these benefits come with a flipside. If the Wi-Fi is not secure, non-customers and non-employees will be taking advantage and using your Wi-Fi without your knowledge. Worse than that, people will be able to access your business data.