Operations Security

One factor often overlooked in creating and implementing information security policy is the human factor.  Your reading this week explores this factor.  One tool to help manage the human factor is the separation of duties (also called segregation of duties).  Explain what separation of duties is and why it is important.  What three functions should be separate in all transactions?  Give an example of how duties can be separated using an example you might find in an organization. 

500 words. APA format with reference.