Ubuntu Network Server

Ethical Hacking: Linux Intrusion Essentials

Cyber Security: Linux Audit

Python Flask: Make Web Apps with Python

Linux Firewalls

Hackers Toolkit

Windows Hacking Uncovered: Log Analysis & Defense

Cyber Security: Detect and Prevent Malware

Mastering Windows Security

Linux Antivirus Essentials

Ethical Hacking: Malware Secrets