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How does Norton remove virus from your computer?

How does Norton security software remove virus from your computer?
Symantec Corporation is a world leading PC security provider. It provides ultimate security solutions for both personal and business purposes. Symantec Corporation’s Norton range of security software ensures the best PC protection with its core protection engine powered by Symantec AntiVirus Research Center (SARC). The Norton AntiVirus software is equipped with a personal firewall, antispyware, Trojan and rootkit remover. It is a complete security solution for PCs. Norton AntiVirus uses a number of ways to determine and remove a virus from the computer, Three of them have been discussed here. They are as follows:

• Signature based detection
• Heuristics
• Rootkit detection

Signature based detection

Traditionally, like all other antivirus software, Norton also relied upon the virus signatures to detect any virus and remove it. Norton AntiVirus software is powered by Symantec AntiVirus Research Center (SARC). SARC has a team of experts to research and find any new threats. The SARC team is working round-the-clock to identify any new virus. When they detect a new virus, they first analyze it and then make a virus signature. That signature is provided in the central update server so that almost all Norton clients can get the new signature. Using the signatures, Norton AntiVirus is able to fight any new viruses. Norton also allows its users to upload any new variant of viruses or any suspicious files for analysis.

Heuristics

Besides the virus signature based detection system, Norton uses a Heuristics analysis system to ensure maximum protection. A virus may start as only a single variant, but might be modified by other attackers into different variants. By using the Heuristics analysis technique, Norton can identify a number of variants of a virus using a single signature file. Heuristics is a technique that detects viruses using a generic signature. The Symantec research team finds common areas that all variants of a virus share uniquely and creates a single generic signature. These signatures often use wildcard characters that contain non-contiguous code. These wildcards allow the scanner to detect virus even if it is padded with extra or meaningless code.

Rootkit detection

Rootkit is an advanced type of virus that can hide its presence. It changes the operation of the operating system and often attacks the antivirus software. Norton’s advanced protection system can detect and remove rootkits using a bootable tool.

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