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Tuesday, February 10, 2009

Computer virus

Computer virus

Computer virus is a computer program that can copy or reproduce itself and spread in a way to insert a copy of itself in other programs or documents. Computer virus can with a biological virus that spread in a way to insert itself, the cells of living beings. Viruses can damage the computer (for example with damage data in the document), making computer users feel disturbed, and does not work at all.

Generally, computer viruses can damage the computer and software can not directly damage the computer hardware in a way to load a program that forces the device over to a particular process such as VGA, Memory even Procesor (especially on the operating system, such as family-based operating system Windows (Windows 95, Windows 98/98SE, Windows NT, Windows NT Server, Windows 2000, Windows 2000 Server, Windows 2003, Windows 2003 Server, Windows XP Home Edition, Windows XP Professional, Windows XP Service Pack 1, Windows XP Service Pack 2, Windows Vista Service Pack 1) and GNU / Linux. negative effect is mainly a computer virus reproduce itself, creating a resource on the computer (such as Real Time CPU, memory usage) to be reduced significantly. Almost 95% The virus is a computer virus based on the Windows operating system. The rest, 2% attack Linux / GNU with the kernel version below 1.4 (and Unix, as the source of Linux, of course), 1%, especially the Mac Mac OS 9, Mac OS X (Tiger, Leopard). 2% more attack other operating systems such as FreeBSD, OS / 2 IBM, and Sun Operating System.

How Overcoming Computer Virus

Virus attacks can be prevented by others or by using antivirus software. This type of software can also detect and remove computer viruses, the virus database as long as the computer is owned by the antivirus software already contains the code to remove the virus.

An example is virusnya Worm, Trojan, Backdoor, hacking, etc.. Example of a reliable anti-virus and prevent virus is Kaspersky, AVG, AntiVir, PCMAV, Norton, Norman, and McAfee.