Computer viruses are a major problem for everybody online. They can quickly cause devastation to PCs around the world. One of the reasons why they are so problematic is that they can be spread very quickly. It is helpful to know about how computer viruses are spread in order to combat them.
A virus must be activated on a network or PC in order to become dangerous. This can happen in a number of ways, such as by opening an attachment. When it is opened, the virus searches for programs or functions that it has been programmed to infect. Once it has located its objective it reproduces itself within the program and transmits itself to other areas of the computer, as well as other computers in the network.
There are four main types of computer virus that can be spread throughout systems and networks. Program viruses are infected via software on the computer and can spread when the infected program is copied onto another system. A boot sector virus is a bug that is contracted via the computer’s floppy disk. Every time a disk is used in the corrupted drive, it becomes infected and spreads the bug to additional machines. There are also macro viruses, which are built into certain documents on popular programs like Microsoft Excel or Outlook. The virus carries out its procedure when the document is opened and spread it to other pieces on work in the software. Finally there is the classic email form of virus. Bugs are attached to emails and are sent to people, often with the email offering fabulous prizes so that the recipients open them. Once the files are opened, the viruses become active and attack the computer.
The best ways to avoid contracting a virus are to make sure you do not open emails from people you don’t know. Anti virus software is also crucial.