Beware of emails with attachments especially from a stranger.

Worms that replicate themselves by way of email have a tendency to use unknown email addresses to distribute themselves. Even if the email is from someone you know, always examine the attachment first for signs of danger by checking the file extension of the attachment like what was discussed previously.

Check for updated versions of your email software often. If you use Microsoft Outlook or Outlook Express, then you should know that these two programs are the favorite targets of virus writers.

The reason is that these two programs rely on visual basic scripts to run some aspects of their programs and virus authors exploit the weaknesses of these scripts as a way into infecting your computer.

As an example, early versions of Outlook Express could easily be contaminated just by showing an infected email in the preview panel. That meant that you didn't even have to execute anything in order for the virus to infect your PC! So if you're using any of these two programs, visit the Microsoft site every now and then for updates and also for security patches.

There is no additional cost in downloading these updates and security patches so it is always a good idea to keep the vital parts of your operating system up-to-date.

We've established so far that email attachments are today's most common means of virus infection. We've also shown you some tips for strong antivirus protection. And just as you would maintain your car to prevent engine or other troubles, it is also wise to keep all the files in your computer trouble-free.

Always scan files obtained from outside sources for virus infection. These files could be programs downloaded from the internet, or files you obtain through floppy disks or even CD-ROMs. For those who are fond of IRC (Internet Relay Chat), you may find that some stranger you are chatting with will suddenly send you a file. Accepting these files are tantamount to computer suicide even if they insist the file is harmless. Remember that viruses always attack the unsuspecting user, so no matter how much you trust a friend, he/she may be an unsuspecting victim of a virus infection previously and all the more if the file is being sent by a total stranger.

In the next section, we will explain how sending a harmless joke email or inspirational email could easily expose you to being included in a spammer's list.