Online tools to help you keep your computer free of viruses
NOTE: Free online antivirus scanning tools will help you find out if you have any viruses or other security issues on your computer, but you'll usually have to subscribe to a paid antivirus service in order to fully disinfect your computer.
Avast's online scanner tool lets you check single files (up to 512kb in size) to see if they're infected by viruses. You have to upload the file to be checked to Avast's site in order to scan it.
Online virus scanner that performs a "deep scan" of your computer to detect any viruses or spyware that may be lurking on it. Scans may take several hours to complete as they're very thorough.
