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Top : Computers : Software : Operating_Systems : Unix : Security : News_and_Media
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Sites:
  		• Computer Security Basics: Describes complicated concepts like trusted systems, encryption, and mandatory access control in simple terms.
  		• Practical UNIX & Internet Security, 3rd edition: Focusing on the four most popular Unix variants today--Solaris, Mac OS X, Linux, and FreeBSD. Includes table of contents, errata, and sample chapter
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