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Table Of Contents  CertiGuide to Security+
 9  Chapter 5:  Operational/Organizational Security (Domain 5.0; 15%)
      9  5.4  Policy and Procedures
           9  5.4.1  Security Policy

Previous Topic/Section  Privacy
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Next Page  Need to Know
Next Topic/Section  Separation of Duties

Separation of duties involves the use of multiple personnel to perform the different steps involved in a job activity. Sensitive operations operate with what is called dual control. This means two people are tasked to a job, often with one given the responsibility of doing something, and the other given the responsibility of signing off on it. For example, a bank teller informs a supervisor of a transaction, and the supervisor initials that they reviewed the transaction. The assumption is that with an additional person involved, collusion is required to engage in an inappropriate activity. It was Ben Franklin who said, “Two people can keep a secret if one of them is dead.”

Specific separation of duties is part of a security policy. A typical procedure would be to have different employees for accounts payable and accounts receivables. For specific examples click on the footnote432.

Separation of Duties

Job tasks are split between employees, limiting full control of sensitive information.



Previous Topic/Section  Privacy
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Next Page  Need to Know
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CertiGuide for Security+ ( on
Version 1.0 - Version Date: November 15, 2004

Adapted with permission from a work created by Tcat Houser et al. Version Copyright 2004 Charles M. Kozierok. All Rights Reserved.
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