1. Do not open any files attached to an email from an unknown, suspicious or untrustworthy source.

2. Do not open any files attached to an email unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate themselves and spread through email.

3. Do not open any files attached to an email if the subject line is questionable or unexpected.

4. Delete chain emails and junk email. Do not forward or reply to any to them. These types of email are considered spam, which is unsolicited, intrusive mail that clogs up the network.

5. Do not download any files from strangers.

6. Exercise caution when downloading files from the Internet. Ensure that the source is a legitimate and reputable one. Verify that an anti-virus program checks the files on the download site. If you're uncertain, don't download the file at all or download the file to a floppy and test it with your own anti-virus software.

7. Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you'll want to be protected. These updates should be at least the products signature files. You may also need to update the product's scanning engine as well.

8. Backup your files on a regular basis. If a virus destroys your files, at least you can replace them with your back-up copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.

9. When in doubt, always err on the side of caution and do not open attachments. Not executing is the more important of these caveats.

10. Whenever you have a situation that you are unsure of, contact your immediate supervisor.