Computer Viruses are malicious
software programs that damage computer program entering into the computer
without the permission of the users, and also run against the wishes of the
users. They are replicated by themselves. Viruses are so dangerous and
malicious that they can be automatically copied and pasted from memory to
memory over and over; the transmitting power is too much quick from network to
network that can simply hang smoothly running computer, sometimes damage the
important programs of the computer. Viruses are very dangerous program can go
on their activities automatically and can do a great loss of the users.
All of the users of the computer
don’t like computer virus and also don’t like to hear of it. But it’s a great
mistake. You need to know much about the viruses as they are the enemies of
your computer. The clear knowledge of the enemies will protect you from
upcoming harm committed by the enemies.
It is quite impossible to give
the proper information about the types of viruses. The types of viruses are
changing day by day. Therefore on the basis of their origin, hiding, damaging
types, operating system etc their types as follows:
Boot Sector Virus: Boot sector virus infects the boot sector on
floppy disks, hard disks and other bootable media like DVD or CD. The examples
of boot sector viruses are – Form, Michelangelo, and Stoned.
Macro Virus: A macro virus is an original individual amongst the types of
computer virus, and contaminates the macros inside a pattern. As
soon as you release a spreadsheet or word processing text, the macro virus gets
into typical pattern. The examples of Macro viruses are – Relax, Babbles, and
Melissa.
Companion Viruses: Companion viruses are as same as direct action
types or resident types. They are companion viruses as because sometimes they
get into the method and accompany the other existing files. The example of
accompany viruses are – Asimov.1539, Terax.1069.
File Infector Virus: This
sort of virus contaminates programs or executable records (records with .EXE or
.COM extension). Whilst one of these programs is run, straight or circuitously,
the virus is turned on; creating the harmful belongings it is automatic to bear
out. The greater part of accessible viruses fit in to this class, along with
can be classified depending on the proceedings that they take out.
Therefore, Fat Viruses, Polymorphic
viruses, Multipartite Viruses, Worms, Direct
Action Viruses, Resident Virus, Network viruses, Logic bomb etc are the types
of viruses. The proper knowledge of viruses can keep your computer protected from
the malicious attack of the viruses.
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