Linux Bible (10th edition)
Christopher Negus
NetCat for pentesters - Chiragh
Chiragh
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
Quick Start Guide to Penetration Testing
Sagar Rahalkar
Linux Networking Cookbook
Carla Schroder
NGINX Cookbook
Derek Dejonghe
Asterisk: The Definitive Guide
Jim Van Meggelen & Russell Bryant & Leif Madsen
Kubernetes Patterns
Bilgin Ibryam & Roland Huß
Kubernetes: Up and Running
Brendan Burns & Joe Beda & Kelsey Hightower & Lachlan Evenson
Building Secure and Reliable Systems
Heather Adkins & Betsy Beyer & Paul Blankinship & Piotr Lewandowski & Ana Oprea & Adam Stubblefield