Computer viruses
are small software programs that are designed to spread from
one computer to another and to interfere with computer operation.
A virus might
corrupt or delete data on your computer, use your e-mail and
messaging programs to spread itself to other computers, or even
erase everything on your hard disk.
Viruses are most
easily spread by attachments in e-mail messages or instant messaging
messages. That is why it is essential that you never open e-mail
attachments unless you know who it's from and you are expecting
it.
Viruses can be
disguised as attachments of funny images, greeting cards, or
audio and video files. Viruses also spread through downloads
on the Internet. They can be hidden in illicit software or other
files or programs you might download.
After you open
and run an infected program or attachment on your computer,
you might not realize that you've introduced a virus until you
notice something isn't quite right.
Here are a
few common signs that your computer might be infected:
- Your computer
runs more slowly than normal
- Your computer
stops responding or locks up often
- Your computer
crashes and restarts every few minutes
- Your computer
restarts on its own and then fails to run normally
- Applications
on your computer don't work correctly
- Disks
or disk drives are inaccessible
- You can't
print correctly You see unusual error messages
- You see
distorted menus and dialog boxes
** The free software is only available for private and non-commercial
use only and we can advise you on commercial products for business
use.