What Is Security?

Security is a very broad term and depends upon the context of its use within the computing environment. The U.S. Department of Defense (DoD) has meticulously dissected this topic into what is known as the Rainbow series of guides. For a complete listing of these guides and other information, refer to the following Web sites:www.fas.org/irp/nsa/rainbow.htmwww.dynamoo.com/orange/index.htmlwww.defenselink.mil/webmaster/policy/dod_web_policy_12071998_ with_amendments_and_corrections.htmlwww.radium.ncsc.milwww.itsec.gov.ukThe guides provide excellent explanations for the varying degrees of security, which are graded from levels D (the least secure), to C, B, and A (the most secure).