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CHAPTER 15: Security-Related Issues > The Principle of Least Privilege and Defe...

The Principle of Least Privilege and Defense in Depth

Two fundamental principles of good security design are the principle of least privilege and defense in depth. We'll briefly discuss these two principles in this section.

  • Principle of least privilege: The principle of least privilege states simply that a user should be given the minimum number of privileges possible to enable the user to get his job done. We see this principle being applied routinely in our day-to-day life. For example, only those employees who need access to the rooms in an office building are given access codes (or keys) to those rooms. Similarly, chances are that you and your manager can access part of your company's HR database to see your salary and benefits details, but your peers cannot access your particular information.

  

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