1. Do not open e-mails coming from unknown or distrusted sources.
2. Do not open any e-mail message unless you know what is it about, even if it
comes from a friend or partner. Most viruses spread via e-mail messages so
please ask for a confirmation from the sender if you are in any doubt.
3. Do not open the attachments of messages with a suspicious or unexpected
subject. If you want to open them, first save them to your hard disk and scan
them with an updated antivirus program.
4. Delete any chain e-mails or unwanted messages. Do not forward them or reply
to their senders. This kind of messages is considered spam, because it is
undesired and unsolicited and it overloads the Internet traffic.
5. Do not copy any file if you don't know or don't trust its source.
6. Be very careful when downloading files from the Internet. Check their source
every time and make sure that an antivirus program already verified the files on
the download site. If you are not sure about this, copy that file on your hard
disk or on a floppy disk and recheck it using your own antivirus.
7. Use a reliable antivirus program and update it permanently. Select an
antivirus that has a resident module, so that your computer will be permanently
protected.
8. If you have an antivirus program installed on your system, update it
regularly. An average of 500 new viruses are discovered every month. The
antivirus updates should consist at least of virus signature lists, but it is
desirable to keep the antivirus program updated too.
9. Make file backups on a regular basis. Store these copies on removable,
write-once media such as CD-R.
10. Any time you have doubts about a file or message, do not download, execute
or open it.