Roger A. Grimes has worked in computer security for over 30 years, specializing in host and network protection, including cryptographic systems. As a professional penetration tester, he successfully broke into every company he was hired to hack into within an hour, with a single exception that took three hours. He has been the computer security columnist for InfoWorld and CSOOnline magazines since 2005. As evangelist for KnowBe4, the world's largest security awareness training vendor, Roger speaks at major security industry events worldwide. Less