342115399-Understanding-Core-Security-Principles.docx -...

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IT-ELEC1A DOMINGUEZ CHAPTER 1 UNDERSTANDING CORE SECURITY PRINCIPLES Every computer presents a certain level of risk. You cant eliminate risk unless you simply never turn on the computer. However, you can manage risk. You start by understanding what risk is and understanding that risk mitigation is accomplished by reducing vulnerabilities. Several core security principles guide the protection of information technology (IT systems and data. When you understand these core security principles its easier to grasp the reasoning behind many security practices. Most security principles can be traced back to the security triad (also called the AIC or CIA triad). The security triad mandates protection against the loss of confidentiality, the lost of integrity and the loss of availability of IT systems and data. Other principles include defense-in-depth and the principle of lest privilege. Administrators harden, or secure, IT systems by attempting to configure them more securely than the default
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