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botnet virus

Created: 28 Mar 2013 • Updated: 03 Apr 2013 | 5 comments
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What is the Botnet virus?

How it effect on systems?

How we can protect the system from this virus?

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honey_jack's picture
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What is a Bot?

A "bot" is a type of malware that allows an attacker to take control over an affected computer. Also known as “Web robots”, bots are usually part of a network of infected machines, known as a “botnet”, which is typically made up of victim machines that stretch across the globe

Since a bot infected computer does the bidding of its master, many people refer to these victim machines as “zombies.” The cybercriminals that control these bots are called botherders or botmasters.

Some botnets might have a few hundred or a couple thousand computers, but others have tens and even hundreds of thousands of zombies at their disposal. Many of these computers are infected without their owners' knowledge. Some possible warning signs? A bot might cause your computer to slow down, display mysterious messages, or even crash.

How Bots Work

Bots sneak onto a person’s computer in many ways. Bots often spread themselves across the Internet by searching for vulnerable, unprotected computers to infect. When they find an exposed computer, they quickly infect the machine and then report back to their master. Their goal is then to stay hidden until they are instructed to carry out a task.

After a computer is taken over by a bot, it can be used to carry out a variety of automated tasks, including the following:

Sending Stealing DoS (Denial of Service) Clickfraud  
They send
- spam
- viruses
- spyware
They steal personal and private information and communicate it back to the malicious user:
- credit card numbers
- bank credentials
- other sensitive personal information
Launching denial of service (DoS) attacks against a specified target. Cybercriminals extort money from Web site owners, in exchange for regaining control of the compromised sites.

More commonly, however, the systems of everyday users are the targets of these attacks -- for the simple thrill of the botherder.

Fraudsters use bots to boost Web advertising billings by automatically clicking on Internet ads.  

Protect Against Bots

To safeguard against malicious bots, security experts at Symantec offer the following advice:

  1. Install top-rated security software (such as Norton 360) and Norton Internet Security.
  2. Configure your software's settings to update automatically.
  3. Increase the security settings on your browser.
  4. Limit your user rights when online.
  5. Never click on attachments unless you can verify the source.
  6. Ensure that your system is patched with the most current Microsoft Windows Update.
  7. Set your computer’s security settings to update automatically, to
    ensure you always have the most current system patches.

Thanks & Regard

Honey Jack

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W007's picture

What is the Botnet virus?

How it effect on systems?

The term bot is short for robot. Criminals distribute malicious software (also known as malware) that can turn your computer into a bot (also known as a zombie). When this occurs, your computer can perform automated tasks over the Internet, without you knowing it.

Criminals typically use bots to infect large numbers of computers. These computers form a network, or a botnet.

Criminals use botnets to send out spam email messages, spread viruses, attack computers and servers, and commit other kinds of crime and fraud. If your computer becomes part of a botnet, your computer might slow down and you might inadvertently be helping criminals.

How we can protect the system from this virus?

More Info

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Mick2009's picture

Hi hineshtrivedi,

These articles provide some details on various real world botnets:

Here are some very good recommendations from Symantec Security Response on how to stay safe:

Please update this thread with news on whether or not the above advice has answered your question, or if there are any additional things you need to know! &: )

Wih thanks and best regards,


With thanks and best regards,


Mithun Sanghavi's picture


Bots are one of the most sophisticated and popular types of cybercrime today. They allow hackers to take control of many computers at a time, and turn them into "zombie" computers, which operate as part of a powerful "botnet" to spread viruses, generate spam, and commit other types of online crime and fraud.

Check these Articles which would answer all your questions:

Bots and Botnets—A Growing Threat

Spam Botnet Analysis – A Strategic Viewpoint

Analysis of Spam Delivered by Botnets


Symantec Guide to Scary Internet Stuff - Botnets

To stay safe, check this Article:

Hope that helps!!

Mithun Sanghavi
Associate Security Architect


Don't forget to mark your thread as 'SOLVED' with the answer that best helped you.

consoleadmin's picture

What is the Botnet virus?

A botnet is a collection of internet-connected programs communicating with other similar programs in order to perform tasks. This can be as mundane as keeping control of an IRC channel, or it could be used to send spam email or participate in DDoS attacks. The word botnet stems from the two words robot and network.

How it effect on systems?

Read the article

How we can protect the system from this virus?