Understanding Virus
Virus is a program or software created with the intention to damage or interfere with the performance of a computer. Software like this can damage the contents of the file, and some even to damage the operating system and computer networks by destroying the various data contained in it. The existence of a virus on a computer is difficult to detect, unless we have installed anti-virus software. Usually new computer users realize the computer has contracted the virus after a kerusakah on the computer system.

Virus Spread
Virus can spread from one computer to another through various media such as through floppy disk, flash disk, memmory card or other media. Viruses can also spread on computer networks via e-mail and bad websites.

Most viruses only damage certain types of files. When the virus infected file is opened by computer, then the virus will spread to the files of the same type, so it will be a lot of yyang files infected with the virus. If one of the files infected with the virus was sent to another computer, then the virus will spread to the computer that will receive the file earlier.

Addressing and Calling Computer Viruses
It's important to keep your computer protected from infection and virus attacks. One of them by installing software that can check the existence of a virus before the virus is damaging our computer system software. Anti-virus software can be obtained by purchasing the program. This program can detect and remove viruses found on our computer. This program will automatically check the floppy disk and e-mail attachment to clean the virus. If we have installed an anti-virus software, then we should always update it with the latest edition. This needs to be done because every time always found a new virus variants, so it needs to be made refinement on anti-virus software used in order to counteract the new viruses.

But if we can not install anti-virus program, then the things we must do to prevent the entry of virus to our computer are:
Avoid using someone else's flash disk is not guaranteed the cleanliness of the data, because the disk may contain viruses.
Carefully open the internet sites are not clear origin
Always use original software licensed.
Never open attachments to emails other than those from people we trust and are guaranteed not to contain any particular virus load.
Always keep backups of all data we have to minimize losses caused by virus attacks. Because the virus can make us lose important data that we still need.
So understanding computer viruses and how to overcome them and menangkalnya so that our computers safe from infection of this dangerous virus attack, may be useful. thanks.