Polished Ruby Programming
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Building a Cyber Risk Management Program
Brian Allen & Brandon Bapst & and Terry Allan Hicks
CompTIA Security+: SY0-601 Certification Guide, Second Edition
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Mastering pfSense, Second Edition
David Zientara
Mastering Hyper-V 2012 R2 with System Center and Windows Azure
John Savill
Network Security Bible
Eric Cole & Ronald L. Krutz & James Conley
Microsoft Windows Networking Essentials
Darril Gibson