Gregory, Peter: - Peter H. Gregory, CISM, CISA(R), CRISC(TM), CDPSE(TM), CISSP(R), CIPM(R), DRCE, CCSK(TM), is a 30-year career technologist and a security executive at a regional telecommunications company. He is the author of more than 50 books on information security, privacy, and technology, including CISA Certified Information Systems Auditor All-in-One Exam Guide, Fourth Edition; CISSP Guide to Security Essentials; and The Art of Writing Technical Books.