laptop repairs perth

Computer viruses are small software programs that are designed to spread from one computer to another. Computer viruses comes in different forms in these days. We are going to describe two types of categories such as : what they infect and how they infect.

How virus works:
  • An infected file is run. This is either a program file, or a boot sector program at the boot time.
  • The infected program has been modified so that instead of the proper code running, the virus code runs instead.
  • The virus code becomes active and takes control of the PC.
  • What exactly the virus does depends on what the virus is written to do. Their primary goals however include replication and spreading.

Most common types of Viruses:

    Resident Virus

This type of virus is permanent and which resides in the RAM memory. Corrupting files and programs that are opened, closed, copied and renamed.

Eg: Meve, CMJ, Randex
    Multipartite Virus

These viruses are distributed throughout the infected media and usually hides in the memory.

    Direct Action Viruses

The main purpose of this virus is to replicate and take action when it is executed.

Overwrite Virus

Virus of this kind is characterized by the fact that, it deletes the information contained in the files that infects.

Eg: Trj.Reboot
    Network virus

Network virus rapidly spread through a Local network area, and sometimes through the internet.

Eg: Nimda, SQLSlammer are most dangerous network viruses.  

We had discussed a few types of viruses in this section. Keep reading our blog to know more information about the virus removal services in perth and about the laptop repairs perth.

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