5.1. Explain the Basic Principles of Security

Security is unlike any other topic in computing. The word security is so encompassing that it's impossible to know exactly what you mean when you say it. When you talk about security, do you mean physically securing servers and workstations from those who might try to steal them, or from damage that may occur if the side of the building collapses? Or do you mean the security of data from viruses and worms and the means by which you keep those threats from entering the network? Or do you mean security of data from hackers and miscreants who have targeted you and have no other purpose in life than to keep you up at night? Or is security the comfort that comes from knowing you can restore files if a ...

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