Tuesday, October 16, 2007

Are Viruses and Botnets Same – Not Really

Have you heard about Virus? Let me put the term properly, “Computer Virus”. Most probably, if you are running a licensed Windows operating system and most probably, you will be running a anti-virus software from well known vendor which comes to you for free while you purchase the computer (desktop or laptop). What is the purpose of the AV software? It helps you to defend from Virus and Worms. Don’t they help you to protect you from Viruses? Yes, AV will help you to safeguard your computer from viruses provided you update the AV software quite often. Is that an enough protection? Not really.

Think about a weird computer connected to Internet through his broadband and scrapping his head and orkut with no reasons. Suddenly, he gets a sweet email and within seconds he installs software which is tiny. As soon as the software was installed, CPU utilization goes up momentarily. What could be the reason?

The weird computer user is a victim of a “Botnet”. What is Botnet and is it another fancy term? Mind it…It may seem to be a fancy term with a devastating character. As soon as they get installed, they spread the bad news quite faster. Botnet are nothing but tiny software that is installed in a system (Windows, these days) and take control of your network. How it does that?

It’s simple. Botnets does one thing and does it fine. As soon as the tiny software is installed, an IRC connection is made to a malicious IRC Server. This malicious IRC server has hell a lot of features. All the exploits will be there as tiny modules and the modules get downloaded to the box based on the vulnerability. The beauty is that the clients keep on downloading the malicious module and shortly after that the way is over.

So next time, we an email comes to you, be sure that you really want to install the software. Prevention is better than cure. No AV to date can cease the activity of Botnets. Only solution is to reimage the system. But feel free to reimage the systems even if you are 1% sure that you are infected with Botnets. I am not exaggerating as they effects are devastating. In short Botnets are not viruses, but they are Virus of Viruses…