VT4Browsers for Firefox is a browser application developed by VirusTotal. This is the official add-on for Firefox to scan suspicious files or links. It can scan your downloads before storing them easily and for free.

VT4Browsers for Firefox uses the same principles as the original universal file scanning database from the same developer. However, this time, it is way more accessible. It also offers a simple and handy way of dealing with potentially threatening links. Moreover, it doesn't need much to set up the app on your web browser. Although, you can customize the extension's options to your preferences. 

How do you set up this extension?

If you work online, chances are you have tried downloading a file from a website or visiting a potentially risky link. And while you may need whatever it is in the link or file, you cannot risk downloading it and damaging your PC. This is where add-ons such as VT4Browsers for Firefox come to play. It offers a handy way to scan and deal with these potentially threatening links.

Setting up the extension is effortless. Once you open the menu, check the features you would like to have and uncheck those you don't like. You can choose to scan downloads with VirusTotal or avoid certain files. You can also scan URLs and pause downloads while using this service. There are no intricate options and submenus, and everything is easy to spot, select, and manage.

The extension will automatically submit to VirusTotal any files you download that are not filtered out by other more granular settings. However, if you choose not to scan the documents, it will not automatically submit any file you open. Users should also note that the extension will share your domain name, IP address, and mappings for any DNS resolution that your browser performs with VirusTotal.

Should you use the extension?

Overall, VT4Browsers for Firefox is a simple extension that you could use to make your online browsing slightly less dangerous. The app provides an additional layer of security whenever you download, surf the web, or receive documents. Not only that, but it offers these security functions in an easy way. Even more noteworthy is that it will nag you in any way. It only works when you need it.