January 2013
Beginner
408 pages
9h 23m
English
Content preview from Hacking For Dummies, 4th Edition
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Chapter 13
Communication and Messaging Systems
In This Chapter
Attacking e-mail systems
Assailing instant messaging
Assaulting Voice over IP applications
Communication systems such as e-mail and Voice over IP (VoIP) often create vulnerabilities that people overlook. Why? Well, from my experience, messaging software — both at the server and client level — is vulnerable because network administrators often believe that firewalls and antivirus software are all that’s needed to keep trouble away, or they simply forget about securing these systems altogether.
In this chapter, I show you how to test for common e-mail and VoIP issues. I also outline key countermeasures to help prevent these hacks against your systems.
Introducing Messaging System Vulnerabilities
Practically all messaging applications are hacking targets on your network. Given the proliferation and business dependence on e-mail, just about anything is fair game. Ditto with VoIP. It’s downright scary what people with ill intent can do with it.
With messaging systems, one underlying weaknesses is that many of the supporting protocols weren’t designed with security in mind — especially those developed several decades ago ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.