Linux Pocket Guide
Daniel J. Barrett
Classic Shell Scripting
Arnold Robbins & Nelson H. F. Beebe
Foundations of Information Security: A Straightforward Introduction
Jason Andress
Learning CoreDNS
John Belamaric & Cricket Liu
Black Hat Go
Tom Steele & Chris Patten & Dan Kottmann
Web Security for Developers
Malcolm McDonald
The Hardware Hacker
Andrew Bunnie Huang
The Car Hacker's Handbook
Craig Smith
Rootkits and Bootkits
Alex Matrosov, Eugene Radionov, Sergey Bratus
Real-World Bug Hunting
Peter Yaworski
Practical Binary Analysis
Dennis Andriesse
Penetration Testing: A Hands-On Introduction to Hacking
Gorgia Weidman
Metasploit: The Penetration Tester's Guide
David Kennedy, Jim O'Gorman, Devon Kearns, Mati Aharoni
Linux Basics for Hackers
OccupyTheWeb
Hacking: The Art of Exploitation
Jon Erickson
Attacking Network Protocols
James Forshaw