Virus Computer

A computer virus is a computer program that can duplicate or copy itself and spread by inserting copies of itself into other programs or documents. Computer viruses can be analogous to a biological virus that spreads by inserting itself into living cells. Computer viruses can be destructive (for example by destroying the data on the document), making computer users feel annoyed, or no effect at all.
How it Works
Computer viruses generally can damage the computer software and can not directly damage the computer hardware in a way to load a program that forces the process over to a specific device such as VGA, Memory Procesor even (especially on operating systems, such as the family of Windows-based operating system (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 even GNU / Linux. The negative effects of computer viruses in particular is to multiply himself, which makes the computer resources (such as Real Time CPU, memory usage) to be reduced significantly. Nearly 95% of virus is computer virus based on the Windows operating system.The remaining 2% attack Linux / GNU with the kernel version below 1.4 (and Unix, as the source of Linux, of course), 1% to attack the Mac, especially the Mac OS 9, Mac OS X (Tiger, Leopard). 2% more attack other operating systems such as FreeBSD, OS / 2 IBM, and Sun Operating System. virulent virus which will damage the hardware and the like.[Edit] Types of Computer Viruses
A computer virus itself is a general term used to describe any kind of attack against computers. However, when categorized by the way it works, computer viruses can be grouped into categories as follows:Worm - Menduplikatkan himself on the hard disk. This makes the computer resources (hard drive) the worm it will be full.Trojan - Taking the data on infected computers and sends it to the trojan maker itself.Hacking - is a direct attack against the user's computer from hackers who access a particular internet page, with or without the aid program that has been inserted in the user's computer.Backdoor - Almost the same with a trojan. However, Backdoor usually resembles the files fine. For example games.Spyware - Virus that monitors the infected computer.Rogue and ransomware - a program that mimics the antivirus program and show antiviral activity as normal, and giving false warnings about the virus. The goal is for users to purchase and activate the fake antivirus program and make money for those rogue virus makers.Rootkits - A virus that works like an ordinary computer system working alone.Polymorphic Virus A virus that likes to beubah changed so as not to be detected.Cell Phone Virus - a virus that specifically run on mobile phones, and can cause various effects, ranging from cell phones damage, steal data in mobile phones, to make calls in secret and spend credit cell phone users.[Edit] How to Cope with Computer Viruses
Virus attacks can be prevented or overcome by using antivirus software. This type of software can also detect and remove computer viruses. Computer viruses can be removed using database / database / Signature-based detection, heurestik, or ratings of the program itself / Quantum. Used by Norton.Example of a reliable anti-virus and prevent virus is Kaspersky, Panda, Symantec, BitDefender, avast!, AVG, Avira AntiVir, Norton, Norman, McAfee, and others.

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