SUMMARY for Firefox and chrome for each loaded web page or downloaded file then the webpage or downloaded file is filtered with clamav in the past there were a plugin for Firefox whose name is "Fireclam" see https://addons.thunderbird.net/en-us/firefox/addon/fireclam/versions/ If the webpage contains no virus then the webpage is displayed. If the downloaded file contains no virus then it is delivered to user. If the webpage contains a virus then the webpage is not displayed. If the downloaded file contains a virus then it is deleted.
Created attachment 134348 [details] fireclam extension