How Do Viruses Spread?
We now know what is a computer virus and so, it will be interesting to understand how do viruses spread. For a virus to spread it must first be triggered, for example, by the user visiting a potentially dangerous site, opening a document infected by a virus, booting with a diskette infected by a "boot sector virus," or by double clicking on an infected executable file.
The Entire Process Works In The Following Way:
* A virus software program is launched
<br>* The virus code is loaded into the PC memory
<br>* The virus executes its destructive payload
<br>* The virus replicates itself into other programs
If all a virus did was to replicate itself, then the harm caused would have been negligible, but unfortunately viruses do something far destructive like overwriting the boot sector of your hard drive, stealing your sensitive passwords, and hacking your e-mail ids.
What Are Trojan Horses?
As explained earlier, Trojans or Trojan horses do not replicate themselves but perform an undesired yet intended function, while at the same time pretending to do something else. A classic example is a fake log in program into a supposedly genuine bank site that prompts you to display your sensitive account information.
How Do You Protect Your Computer From Viruses?
To be safe, you simply need to load antivirus software. Once you buy and install antivirus software, you will be prompted to download regular updates that will allow the program to fight the latest computer viruses. A typical antivirus software performs the following functions:
* Scans and protects your computer against incoming e-mails
<br>* Alerts you, if you attempt to download an infected file
<br>* Prevents external attacks by firewall software
Fortunately, computer users do not feel jinxed with viruses these days. Antivirus products have become more advanced. People have understood that the problem of virus will stay forever, with newer versions making appearance, often with regular predictability. Happily, people will continue to use computers as long as there are people who can offer solutions.
A common question most computer users ask is how to remove a virus from their computers. But before you start researching how to get rid of a computer virus, you should first know what they are. Aside from being called viruses, these malevolent programs are also known as malwares, trojans or worms. These programs can really damage your computer and wipe out important files that are stored in it, plus it also causes your computer to function sluggishly. And like common human viruses like the flu or chicken pox, a computer virus can replicate and infect other computer systems.
There are several things that computer users should know when trying to remove a computer virus.
• A virus spreads fast, so refrain from moving files from the infected PC to computers that you and other people use.
• If your computer system is attacked by a virus, start looking for a good antivirus software that can remove it from your system. Not taking immediate action can really damage your files and your hardware.
• Most computers are now installed with antivirus software along with a standard Operating System. But the software should be updated regularly to ensure an adequate and up to date protection against newly created viruses. virus computer
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