Enterprises are expanding their wireless networks with increasing confidence, believing that rooting out rogue access points and implementing WPA2 will put an end to Wi-Fi security concerns. But attackers are, nevertheless, zeroing in on the many millions of corporate client devices, exploiting them to gain entry to corporate networks and sensitive information. These new hacking tools and techniques underscore the need for wireless intrusion prevention systems (WIPS) that can leverage the power of stateful traffic analysis to effectively deal with these and other security threats.