Computer can be damaged by a virus.
In the world of computer virus is a program that can copy itself and spread through a network that is destructive. This makes the computer unable to operate under normal conditions. An antivirus is needed to kill computer virus in a system.
One of the famous antivirus is Avast. Avast was developed by Alwil Software. Company with utility in Prague, Czech Republic. Avast is the best antivirus because it has been downloaded by millions of users. Avast can detect virus quickly compared to other antivirus. Computer virus can be classified into several types
1 Worm
Worm is a virus that can duplicate itself on Hard Drive. Make a computer Hard Drive become full so it cannot be used
2 Trojans
Trojans are virus that take data on infected computers and send it to the makers themselves
3 Rootkit
Rootkits are virus that can resemble normal computer systems
4 Spyware
Spyware is a virus that can monitor an infected computer
5 Rogue
Rogue is a virus that mimics an antivirus program so that it displays normal antivirus activity. This virus gives false warnings about the presence of the virus. Therefore we are forced to buy or activate an antivirus that benefits the maker. Rogue virus can also open up security holes to bring in other virus
6 Polymorphic
Polymorphic is a virus that likes to change so it cannot be detected
7 Metamorphic
Metamorphic is a virus that changes its own coding to make it more difficult to detect
Virus really can't be prevented. His presence must be addressed immediately so that not more and more number.
New computers are usually free of virus. As a user you can do the following to avoid virus coming to the computer
1. Beware of Flash Drive
Virus can spread through devices that can move like a Flash Drive. Because the use of Flash Drive is too often removed and installed on various components. Flash Drive needs to be scanned first so that no virus come from outside
2. Avoid downloading haphazardly
Download any file from only one source. This is because certain sites can store virus in files without us knowing. You can ask the forum to find a trusted site so you don't have to search many pages and try one by one
3. Activate the Firewall
Firewall is a system that can determine whether a computer can connect to a network or block it. This system can be a barrier for any virus to enter the computer. To access the Firewall open the Star menu then look for the Control Panel. Find a Firewall and press on or off.
It's best to always scan your computer with an antivirus every time you want to use it. Because of a small mistake. An undetectable virus can spread quickly and is difficult to remove
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