Darril Gibson is an IT trainer who regularly teaches security topics to Air Force personnel. An adjunct professor, he's written or co-authored several IT books, including CompTIA Security+: Get Certified Get Ahead, and Mastering Windows Server 2008 R2. In addition, he's also created training videos on multiple topics for Keystone Learning. Mr. Gibson holds numerous certifications, including (ISC)2 CISSP and CompTIA Security+. He's also been a Microsoft Certified Trainer since 1999.