Wireless, in general, and Wi-Fi, in particular, are quickly becoming the network access method of choice, those inside and outside the enterprise. Over a decade ago, when the IEEE first created 802.11, it was understood that wireless introduced new vulnerabilities, and those vulnerabilities do have to be compensated for. 

Given today’s surge in Wi-Fi client devices, it has become really tough to figure out which unknown clients pose immediate risk to the corporate network. Moreover, it is important to recognize and defend Wi-Fi clients that you do authorize, to prevent them from being compromised.