What is Computer Virus and how to do Virus Removal?

Abstract:
People always complain about computer virus infection, and found it difficult to do virus removal. When a computer is affected by viruses, many problems would come forth such as computer crash, screen of death, data loss and so on. You’ll have a better understanding of computer virus and the damage of it. At the end of this article, we will give you some useful information about computer virus removal.
For further information about virus, please visit:
How to know whether your computer is infected by Windows virus and how to remove it?
How to do virus removal and virus protection?

What is Computer Virus?
A computer virus is a kind of small computer malware that can spread far and wide by copying itself and interfere with computer operation. Many people have erroneously opinions that adware and spyware programs are kinds of computer virus. A true computer virus has the ability of reproduction and can spread from one computer to another when its host is taken to the target computer. So we can know that a computer virus can spread through Internet, floppy disk, CD, DVD or USB drive.

What are the damages of computer virus?
Everyone knows that computer virus could cause damage to a computer. It can destroy almost everything from user’s documents to system folders, from a tiny configuration file to a large software program. And sometimes, it could even destroy hardware. The main damages of a computer virus are listed below:
1. Some viruses can delete or change files.
2. Some viruses can slow down your system dramatically.
3. Some viruses will delete all of your documents, or even reformat your hard drive, making your computer unstable or even unusable.
4. Some viruses can release confidential information like credit card information, account numbers, and passwords by emailing it to random email addresses or the address of the virus writer.
5. Some viruses plant monitoring software or change security settings that allow hackers to enter your computer without you knowing about it and steal information or control it.
6. Other viruses, like Internet worms they can also have effects on computer networks and the Internet.
It is difficult to detect virus when it do not show effect. You may have encountered more than one symptom listed above even computer corrupt when realizing that your computer is infected by virus.

What can we do to remove computer virus?
Remove computer virus manually requires sufficient knowledge of computer, so it would be better for you if you apply computer virus removal software. Powerful security software could avoid computer from infection.
Here we recommend you to use TuneUp360, which is free, fast and stable. It is so easy to use that makes every computer novice able to handle computer virus removal well. After downloading TuneUp360 here, it will scan your computer automatically, and then you could finish spyware removal with one click on “FIX”.

Tip:

The Most Damage Causing Computer viruses

New viruses are created every day. It’s impossible to list all of them. Viruses below are currently cited as being the most prevalent in terms of being seen the most or in their ability to potentially cause damage.

Virus: W32.Beagle.CO@mm

A mass-mailing worm that lowers security settings. It can delete security-related registry sub keys and may block access to security-related websites.

Virus: W32/Netsky-P

A mass-mailing worm which spreads by emailing itself to addresses produced from files on the local drives.

Virus: Backdoor.Zagaban

A Trojan horse that allows the compromised computer to be used as a covert proxy and which may degrade network performance.

Virus: Trojan.Lodear

A Trojan horse that attempts to download remote files. It will inject a .dll file into the EXPLORER.EXE process causing system instability.

Virus: W32/Mytob-EX

A mass-mailing worm and IRC backdoor Trojan similar in nature to W32-Mytob-GH. W32/Mytob-EX runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.

Virus: W32/Mytob-AS, Mytob-BE, Mytob-C, and Mytob-ER

This family of worm variations possesses similar characteristics in terms of what they can do. They are mass-mailing worms with backdoor functionality that can be controlled through the Internet Relay Chat (IRC) network.