The Hardware Hacking Handbook
Jasper van Woudenberg & Colin O'Flynn
Linux Bible (10th edition)
Christopher Negus
Linux iptables Pocket Reference
Gregor N. Purdy
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
Bash Idioms: Write Powerful, Flexible, Readable Shell Scripts
Carl Albing & J P Vossen