Roger A. Grimes (CPA, CISSP, MCSE: Security (NT/2000/2003/MVP), CEH, TICSA, Security+, MCT) is a Windows security consultant, instructor, and author. This is Grimes' third book and he has written over a 150 articles for magazines like Windows IT Pro, Microsoft Certified Professional, InfoWorld, Network Magazine, Windows & .NET, and Security Administrator. He is a contributing editor for Windows & .NET, and InfoWorld magazines. Grimes has presented at Windows Connections, MCP TechMentors, and SANS. He was recognized as "Most Valuable Professional" (MVP) by Microsoft, for Windows Server 2003 security.

Grimes also writes frequently for Microsoft, including material for two courses on advanced Windows security and Technet. He has taught security to many of the world's largest and most respected organizations, including Microsoft, VeriSign, the U.S. Navy, various universities, and public school systems. Grimes spends his time surrounded by the maddening hum of twelve 1U servers in his home office, monitoring his personal honeypots.