Peter H GregoryPeter H. Gregory, CISM, CISA(R), CRISC(TM), CISSP(R), CCISO, CCSK(TM), PCI-QSA, is a 30-year career technologist and an executive security consultant at Optiv Security. He is the author of more than 40 books on information security and technoogy, including CISA Certified Information Systems Auditor All-in-One Exam Guide, Third Edition and CISSP Guide to Security Essentials. Read More Read Less