...researchers at penetration testing firm Immunity have created a reliable remote exploit capable of spawning a worm through an unpatchedsecurity hole in Microsoft’s dominant Windows operating system. A team of exploit writers led by Kostya Kortchinsky...
http://blogs.zdnet.com/security/?p=4350
...greatest threats to organizational security. These devices can harbor key loggers and other malware, planted via unpatchedsecurity holes. Network Access Control (NAC) inspects devices to ensure that they are configured and patched correctly...
http://www.netmotionwireless.com/assets/NetMotion_Security.pdf