Cloud Attack Vectors
Morey J. Haber & Brian Chappell & Christopher Hills
Bash Idioms: Write Powerful, Flexible, Readable Shell Scripts
Carl Albing & J P Vossen
Securing DevOps
Julien Vehent
The Complete Metasploit Guide
Sagar Rahalkar
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys
Michael W Lucas