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

Introduction to digital forensics

Digital forensics (also known as cyber forensics or just forensics) is the process used to collect, identify, gather, secure, and store data from digital systems that can be used as evidence.

In our case, we will focus on forensics to detect the use, abuse, intrusion, damage, or modification of computer systems, servers, networks, infrastructures, or data. However, forensics is also used to recover deleted or modified data, so let's take a few minutes to review how forensics can be used for that.

Forensics to recover deleted or missing data

There is one part of forensics that is used to collect, identify, and recover deleted data from digital media.

Usually, data is recovered from non-volatile media storage such as hard drives and USB drives, but it is also possible to gather data from volatile memory such as Random Access Memory (RAM).

Volatile versus non-volatile memory

Volatile memory such as RAM is a type of memory that...