Practical Linux System Administration
Kenneth Hess
Identity Attack Vectors
Morey J. Haber & Darran Rolls
Linux Pocket Guide
Daniel J. Barrett
Building Secure and Reliable Systems
Betsy Beyer & Heather Adkins & Paul Blankinship & Piotr Lewandowski & Ana Oprea & and Adam Stubblefield
Communication Patterns
Jacqui Read
Technology Strategy Patterns
Eben Hewitt
Software Architecture Patterns
Mark Richards
Practical Design Patterns for Java Developers
Miroslav Wengner