The official CHFI exam 312-49 study guide : for computer hacking forensics investigators. for computer hacking forensics investigators. Exam 312-49 study guide - Burlington, MA : Syngress Pub. , c2007. - xvi, 939 p. : ill. ; 24 cm. ISBN: 9781597491976 1597491977 (pbk.) LCCN: 2008270319 Subjects--Topical Terms: Computer security.Computer crimes. LC Class. No.: QA76.9.A25 / O34 2007 Dewey Class. No.: 005.8