Types Of Virus
Program virus affects the program
file. The boot virus affects boot records, partitions, and allocation
tables. There are many reasons why a virus can spread in a computer.
Infected floppy disks, infected CDs or infected pen drives etc. are
helpful in spreading the virus. Virus can spread in computer by e-mail,
games, internet files. The virus is not very difficult to detect. Their
signs appear in the computer before the virus infection becomes severe.
For example, read the following points
Boot Sector Virus - This
type of virus is stored in the boot sector of floppy and hard disk.
When you start the computer, it interrupts the operating system to load,
and if the operating system starts working in any way, then it starts
disrupting the other plants of the computer.
Partition Table Virus - This
type of virus damages the partition table of the hard disk. They have
no fear of computer data. This affects the hard disk's master boot
record and has the following results.
It executes itself at the higher priority location of the master boot record.
This reduces the RAM capacity.
It generates an error in the disc's input / output controller program.
File Virus - This virus damages the computer's files, it damages the .exe file. These are called file viruses.
Secret Virus (Stealth Virus) - Secret
viruses make every effort to hide their identity from the user in the
computer according to their name. These are called secret viruses.
Polymorphic Virus - This
virus has the ability to change itself frequently so that each
infection looks completely different from the actual infection. It is
very difficult to stop such viruses because each time it is completely
different.
Macro Virus - Macro
viruses are specifically meant to damage certain types of files such as
documents, spreadsheets, etc. These viruses only harm the files in
Micro Software Office.
Partition Table Virus - This
type of virus damages the partition table of the hard disk. They have
no fear of computer data. This affects the hard disk's master boot
record and has the following results.
It executes itself at the higher priority location of the master boot record.
This reduces the RAM capacity.
It generates an error in the disc's input / output controller program.
File Virus - This virus damages the computer's files, it damages the .exe file. These are called file viruses.
Secret Virus (Stealth Virus) - Secret
viruses make every effort to hide their identity from the user in the
computer according to their name. These are called secret viruses.
Polymorphic Virus - This
virus has the ability to change itself frequently so that each
infection looks completely different from the actual infection. It is
very difficult to stop such viruses because each time it is completely
different.
Macro Virus - Macro
viruses are specifically meant to damage certain types of files such as
documents, spreadsheets, etc. These viruses only harm the files in
Micro Software Office.
A Few Prominent Computer Viruses
Today our computer suffers from many types of viruses. New viruses
develop every day. The invention of the Internet has given a new
dimension to the spread of viruses. Do not know how many viruses are
infecting computers through the net today. Some famous viruses which
have infected computers extensively in the past days.
Michelangelo
Disk Washer
C-Brain
MacMag
Jerusalem
Columbus
Michelangelo -
The most notorious virus ever named Michel Angelo was because this virus
terminated the data on 6 March, which is the date of Michelangelo's
birth date. Therefore, it is also called "March 6 Virus". The virus was
detected in mid-1991 and all subsequent anti-virus software was able to
eradicate it. The reason behind this infamous virus was also that many
anti-virus researchers predicted a widespread computer system apocalypse
on 6 March. The fear of this prediction resided in the heart of the
people every 6 March till the entire decade of 1990, which ended much
later.
C – Brain
Amjad and Basit were developed by two Pakistani brothers in January
1986. Only those brothers who knew the virus was right, its purpose was
to discourage people from buying software illegally, it is considered to
be possibly the first virus in the world. Also, it was the most
discussed virus among all viruses till date. Who infected millions of
computers. It was a boot sector virus.
Macmag -
This virus was eradicated by sending a peace message on your monitor. It
used to infect only Apple Macintosh computers. Richard Brando is
considered the originator of this virus. Richard McMag was the publisher
of the magazine and the virus got its name from this magazine. This
virus did not do much harm.
Jerusalem -
The virus was first detected in Hevereu University, Jerusalem, around
1987. Hence its name was Jerusalem. One of its special things was that
it was active only on Fridays. This virus was very dangerous. This virus
used to destroy all the files on which work was done on Friday.
Columbus -
Columbus virus is also known as datacrime and October 13. It was
christened on 13 October because it was activated on 13 October 1989 on
active computers all over the world. Like Jerusalem, it used to infect
executable files and destroy hard disk data.
Summary
The invention of the Internet has given a new dimension to the spread of viruses.
By far the most notorious virus is Michael Angelo because it got its
name because this virus was terminated on 6 March, which is the date of
birth of Michael Angelo.
The disk washer virus got its name from the message "Disk Washer with
Love". Which was detected in India in the last month of 1993.
Amjad and Basit were developed by two Pakistani brothers in January 1986.
The Jerusalem virus was first detected in Hevereu University, Jerusalem, around 1987. Hence its name was Jerusalem.
0 Comments