Metasploit for Beginners
Sagar Rahalkar
Python for Informatics
Charles Severance
Kali Linux 2018
Shiva V. N Parasram & Alex Samm & Lee Allen
Cryptography Engineering
Tadayoshi Kohno & Bruce Schneier & Niels Ferguson
Linux in a Nutshell
Ellen Siever & Stephen Figgins & Robert Love & Arnold Robbins