sed & awk
Dale Dougherty & Arnold Robbins
Building Secure and Reliable Systems
Heather Adkins & Betsy Beyer & Paul Blankinship & Piotr Lewandowski & Ana Oprea & Adam Stubblefield
Cyberspace in Peace and War, Second Edition
Martin C. Libicki
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
Nmap Network Scanning
Gordon Lyon