This isn't going to be a long post over security and the basics. I've included a file in .PDF format so you'll need Adobe Acrobat Reader to view this file. It's also ziped so you'll need Winzip or some other compression utility to decompress the file. This file is from the NIST.
National Institute of Standards and Technology. This file goes over security auditing, policies, threats, physical security, crypto., and other various topics as well.
Enjoy,

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