Hacking Linux
Phil J Hack
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
Securing DevOps
Julien Vehent
Iptables Tutorial 1.2.2
Oskar Andreasson
CyBOK
Awais Rashid & Howard Chivers & George Danezis & Emil Lupu & Andrew Martin