Whitman, Michael E., 1964- Principles of information security / Michael E. Whitman, Herbert J. Mattord. - 4th ed. - Boston, MA : Course Technology, c2012. - xxxi, 619 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 9781111138233 LCCN: 2010940654 Subjects--Topical Terms: Computer networks--Security measures.Computer security. LC Class. No.: TK5105.59 / .W54 2012 Dewey Class. No.: