Antivirus software scans the files and e-mail messages you receive and warns you if they contain a virus. The program also tries to delete any viruses found.
Maximise the effect of your antivirus software
Choose a recent program that scans files from both the Internet and e-mail. Choose the program setting that automatically scans files all the time.
Automatic subscription for easy maintenance
Antivirus software can only protect you from viruses that were known before the latest update. You should therefore configure the program to update itself automatically or perform a manual update at least once a week. There are a number of effective antivirus programs available for free. Some of these are listed below
Tools to help you test your computer for virus
If you fear your computer has a virus, you can also scan your computer with an online scanner. Here are two links that you may find useful: