Security Engineering: A Guide to Building Dependable Distributed ...
Ross J. Anderson
Automate the Boring Stuff with Python, 2nd Edition
Al Sweigart
Mastering Linux Security and Hardening
Donald Tevault
Wireshark for Security Professionals
Jessey Bullock & Jeff T. Parker
Cryptography Engineering
Niels Ferguson & Bruce Schneier & Tadayoshi Kohno
CCNA Certification Practice Tests
Jon Buhagiar
Unauthorised Access
Wil Allsopp