Book Image

Hacking For Dummies - Sixth Edition

By : Kevin Beaver
Book Image

Hacking For Dummies - Sixth Edition

By: Kevin Beaver

Overview of this book

In order to outsmart a hacker, you need to get into the hacker’s mindset. And with this book, thinking like a bad guy has never been easier. In Hacking For Dummies, expert author Kevin Beaver shares his knowledge on penetration testing, vulnerability assessments, security best practices, and every aspect of ethical hacking that is essential in order to stop a hacker in their tracks. Whether you’re worried about your laptop, smartphone, or desktop computer being compromised, this book helps you learn how to recognize the vulnerabilities in your systems and protect them from attacks. You’ll learn the security testing techniques that are based on the information security best practices. You’ll learn how to establish a comprehensive testing plan and plug the holes in your system. The later chapters will teach you how to manage an ongoing security testing program. By the end of the book, you’ll have the knowledge to successfully implement a security assessment program, perform proper security checks, and put the proper countermeasures in place to keep external hackers and malicious users in check.
Table of Contents (15 chapters)
Free Chapter
1
Cover
10
About the Author
11
Advertisement Page
12
Connect with Dummies
13
Index
14
End User License Agreement

Chapter 14

Communication and Messaging Systems

IN THIS CHAPTER

check Attacking email systems

check Assailing instant messaging

check Assaulting Voice over IP applications

Communication systems and protocols such as email and Voice over Internet Protocol (VoIP) often create vulnerabilities that people overlook. Why? Well, in my experience, communications software — at both the server and client levels — is vulnerable because network administrators often believe that firewalls and antimalware software are all they need to keep trouble away, or they simply forget about securing these systems.

In this chapter, I show you how to test for common email and VoIP issues. I also outline key countermeasures to help prevent these hacks against your systems.

Introducing Messaging System Vulnerabilities

Practically all messaging applications...