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BotNet, also known as zombie network and network of spiders is just a band of computers which are used to subtly send information like spam and viruses to other computers on the web. These measures are performed by malicious programs without the knowledge of the people. These harmful programs generally contain viruses, Trojans and worms. Infected computers are called robots or zombies. Many computers which are infected are personal house web PCs which are inadequately protected.

Whenever a PC becomes part of a BotNet, it can be directed to do almost anything by the founder of botnet. In place it becomes a drone which can not resist the commands of its master. In this instance, the master is the founder of the software (malware). Most Bots are utilized in reproduction of spam and viruses. Frequently malware is used for key-press signing which could result in mass identity theft. Zombie computers can be useful for denial of service attacks in which several spiders simultaneously log onto a certain machine, hence exceeding the server's bandwidth and crashing it. This method is very effective if the Botnet is large and includes tens of thousands of computers. While the malware of smaller botnets lack this potential several advanced malware can even spread themselves via email.

BotNets are designed in such a way that they are difficult to find and analyze. Usually they receive directions from their creators through IRC (Internet Relay Channels). By April 2008, the Kraken BotNet and the Storm BotNet are the greatest BotNets in the world having an estimated 400,000 bots. Other significant BotNets are Rbot and Bobax by having an estimated 20,000 spiders each.

The like each day to base, the best way to safeguard your computer effectively would be to frequently check and update your antivirus and firewall pc software. Specific detectors named 'honeynets' have also been put up on the internet these nets mimic the characteristics of computers with known security weaknesses within an effort to lure hackers into them and find spyware makers. It's been offered by Kaspersky Labs (designers of Kaspersky anti-virus) that botnets cause more of a danger to the web community than individual viruses and worms. guide to import export entrepreneur