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

Bonus track – Understanding the danger of unauthorized IoT devices

Another security risk is related to the use of unauthorized IoT devices connected to your network. In this case, an inadvertent user may naively connect an IoT device to your network. This may bring a lot of security risks to your network.

Therefore, you must have a system in place to detect those unauthorized devices in your network.

Detecting unauthorized IoT devices

An easy way to detect unauthorized IoT devices connected to your network is by checking the manufacturers of the devices connected to your network.

You can easily achieve this using a piece of software called Kismet. As you can see in Figure 10.17, with Kismet you can scan the devices on your network and see the manufacturer of the device, enabling you to detect unauthorized devices such as a Raspberry Pi, Alexa, Google Home, Amazon Echo, and so on:

Figure 10.17 – Checking the name of the manufacturer using...