Whitman, Michael E. <br/><br/>
Principles of information security / 
Michael E. Whitman, Herbert J. Mattord 
 - 4th ed. 
 - Boston, MA :  Course Technology,  c2012 
 - xxxi, 617 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781111138219 1111138214 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures<br/>Computer security