Contributing Authors Aaron Bawcom is the vice president of engineering for Reflex Security. Reflex Security helps organizations accelerate adoption of next-generation virtualized data centers. At Reflex, Aaron drives the technical innovation of market-leading virtualization technology. He architects and designs next-generation management, visualization, cloud computing, and application- aware networking technology. During his career, he has designed firewalls, intrusion detection/prevention, antivirus, antispyware, SIM, denial-of- service, e-mail encryption, and data-leak prevention systems. Aaron's background includes positions as CTO of Intrusion.com and chief architect over the Network Security division of Network Associates. He holds a bachelor's degree in computer science from Texas A&M University and currently resides in Atlanta, Georgia. Aaron wrote Chapter 2.