Roger A. Grimes is the author of ten books and over 1000 national magazine articles on computer security, specializing in host security and preventing hacker and malware attacks. Roger is a frequent speaker at national computer security conferences, was the security columnist at InfoWorld and CSO magazines since 2005, and former instructor and penetration tester for Foundstone. Roger is a Principal Security Architect at Microsoft, and works with Microsoft Windows, Linux, and BSD. He lives with his wife in Key Largo, Florida. When not working or writing, he can usually be found scuba diving or fishing in warm, azure blue waters.