Book Image

Mastering Defensive Security

By : Cesar Bravo
Book Image

Mastering Defensive Security

By: Cesar Bravo

Overview of this book

Every organization has its own data and digital assets that need to be protected against an ever-growing threat landscape that compromises the availability, integrity, and confidentiality of crucial data. Therefore, it is important to train professionals in the latest defensive security skills and tools to secure them. Mastering Defensive Security provides you with in-depth knowledge of the latest cybersecurity threats along with the best tools and techniques needed to keep your infrastructure secure. The book begins by establishing a strong foundation of cybersecurity concepts and advances to explore the latest security technologies such as Wireshark, Damn Vulnerable Web App (DVWA), Burp Suite, OpenVAS, and Nmap, hardware threats such as a weaponized Raspberry Pi, and hardening techniques for Unix, Windows, web applications, and cloud infrastructures. As you make progress through the chapters, you'll get to grips with several advanced techniques such as malware analysis, security automation, computer forensics, and vulnerability assessment, which will help you to leverage pentesting for security. By the end of this book, you'll have become familiar with creating your own defensive security tools using IoT devices and developed advanced defensive security skills.
Table of Contents (23 chapters)
Section 1: Mastering Defensive Security Concepts
Section 2: Applying Defensive Security
Section 3: Deep Dive into Defensive Security

SQL injection attack on DVWA

For this demo, we will use Kali Linux, plus the two tools that we just set up: Burp Suite Community edition and DVWA.


If you reboot the machine, you need to start the services required for DVWA again and restart your browser using the following commands:

sudo service apache2 start

sudo service mysql start

One of the cool features of DVWA is that you can customize the difficulty of the attack (they call them security levels). Here is a quick explanation about each of them:

  • Low: The computer is super vulnerable, and it has no security measures at all.
  • Medium: Intended to be a simulation of a web application without good security practices.
  • High: This is an extension of the previous level, in which exploitations may be harder to achieve.
  • Impossible: This is a simulation of a machine with all the best practices applied.

In the case of SQL attacks, the Low security level shows you a text field in which you can...