Ed Tittel is a full-time freelance writer, trainer, and consultant specializing in matters related to information security, markup languages, and networking technologies. He is a regular contributor to numerous TechTarget websites; teaches online security and technology courses for companies including HP, Sony, and Motorola; and writes regularly for Tom’s Hardware. Ed’s professional bio and other information are available at www.edtittel.com

Mike Chapple , CISSP, is an IT security professional with the University of Notre Dame. In the past, he was chief information officer of Brand Institute and an information security researcher with the National Security Agency and the U.S. Air Force. His primary areas of expertise include network intrusion detection and access controls. Mike is a frequent contributor to TechTarget’s SearchSecurity site, a technical editor for Information Security magazine, and the author of several information security titles including The GSEC Prep Guide from Wiley and Information Security Illuminated from Jones and Bartlett Publishers.