John Vacca is an information technology consultant and internationally known author based in Pomeroy, Ohio. Since 1982, John has authored of 28 books and more than 370 articles in the areas of Internet and Intranet security, programming, systems development, rapid application development, multimedia and the Internet. John was also a configuration management specialist, computer specialist, and the computer security official for NASA's space station program (Freedom) and the International Space Station Program, from 1988 until his early retirement from NASA in 1995. His most recent books includ...