There are four a variety of computer viruses classified judging by the various in the computer they cause harm to. The following is a list.
(a) Boot Sector Computer Virus
These viruses include the most popular. They harm the boot records present on just about any digital storage equipment, like the hard drives with the computer and all peripheral disks which are suited for them, including DVDs, CDs plus much more commonly on floppy disks. These viruses might be loaded at any time using the pc, however, they become active after the boot record has been used from the computer, i.e. if it boots when. Once they become active, they become very difficult to remove. The redundancy of floppy disks in today’s times has triggered a reduction in a good boot sector viruses.
(b) Master Boot Record Computer Viruses
These viruses are specialized versions from the boot sector viruses, in that they can mainly affect the master boot record from the computer.
(c) File Infector Computer Virus
The file infector viruses exist on files that are known as executable files. These files include individuals extensions such. Most of these viruses attach themselves towards the files after which offer on the computers of other users whenever they download these files. With the growing use of the Internet among computer users today, the presence from the file infector computer viruses has grown to be quite rampant. One in the most difficult aspects of these viruses is they are retained in the memories with the computers and continue their harm about the machine for a long time, till maybe the entire computer is reformatted.
(d) Macro Computer Viruses
These viruses exist on macros, that happen to be data files, typically related to MS Office programs. Because these viruses tend to be or less specific to MS Office programs, they are constructed with the Visual Basic language which can be an inbuilt language for a lot of MS Office applications.
Viruses that contain several characteristics from those stated earlier are known as multipartite computer viruses.