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Ed Tittel is a 30-year-plus veteran of the computing industry who has worked as a programmer, a technical manager, a classroom instructor, a network consultant, and a technical evangelist for companies that include Burroughs, Schlumberger, Novell, IBM/Tivoli, and NetQoS. He has written and blogged for numerous publications, including Tom's IT Pro, PearsonITCertification, and GoCertify; and is an author on more than 100 computing books with a special emphasis on information security, Web markup languages and development tools, and Windows operating systems.