A virus is a piece of code
that gets loaded onto your computer without your knowledge and runs against
your wishes. Or in other word Computer Virus is a self-replicating piece of
computer code that can partially of fully attach itself to computer files or
applications and cause havoc to the computer, like any other program, it
contains instruction that instruct the computer on a task. But unlike an application
program, a computer virus usually instructs the computer to perform a task
which the user does not want it to perform. The first known occurrence of
viruses goes back to 1987 when the ARPANET was infected by one.
One common misnomer among
people is that you can infect your computer just by opening an email and
reading its text. That is not possible; it is usually the files attached to the
email that contain the virus. The most common file types are ".SCR"
".VBS" ", ".PIF".
Prevention is better than a
cure: Here are some tips to make sure that your computer does not get infected.
==> Get a good Anti-Virus software like Norton
Anti-Virus, MacAfee, PC Cillin, Smadav etc.
==> Keep your anti-virus
software updated by downloading new virus definitions regularly. Most
Anti-Virus software comes with the feature of updating virus definitions.
==> Keep your windows operating
system updated by regularly downloading new updates from the Internet. Windows
O/S's have a lot of security loopholes and bugs that can be easily exploited by
worms and viruses.
==> Make sure the anti-virus
scans the file each time before its opened.
==> Floppy disks and removable
media are a good source of viruses; always scan them before accessing files on
them.
==> Never open email
attachments from sources that are unknown or suspicious.
==> Do not open emails that have questionable subject lines.
==> When in doubt about a file, don't open it.
==> Even with the best of
precautions bad things can still happen. Backup all your data and important
files.
Even after taking all these
precautions if your computer does get infected, then here are a few things that
you can do: Online clearing tools - are a good source of trying to clean out
the virus, there are many Anti-Virus websites that offer free online virus
detection and removal services. Removal tools - If you have an Anti-Virus
software then you can go to the website of that software and download removal
tools designed specifically for the virus. However, you must find out the name
of the virus that infects your PC beforehand. If you have a backup of all your
important files, you can also consider formatting your hard disk.
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