Recently, a new browser extension was released by Microsoft for the most popular browsers, and it’s called Windows Defender Application Guard.
Originally, it was developed for Edge, but now, a port for Chrome and Firefox is available. Currently, the extension is only compatible with the current version of Microsoft Windows Insider build. However, with the release of Windows 10 19H1 that’s supposed to come out this Spring, things are about to change.
Examining the Microsoft help page, it’s stated that Windows Defender Application Guard is a tool that helps enterprise administrators create a white-list of websites they trust, which the regular user is then allowed to access.
Now what might happen if one were to try accessing a URL that’s not on the list? Well, in such a scenario, a sandboxed version of Edge is triggered, essentially protecting the user’s operating system by launching an isolated environment. This way, if an attacker tries to plant malware on the target’s PC, it would not be able to spread outside of the isolated sandbox.
In a similar manner, both Chrome and Firefox users can now benefit from the same Application Guard features previously available exclusively to those running Edge. In other words, should a user attempt to open a URL that’s not whitelisted, the website will start to load in a sandboxed Edge browser.
While it is true that users will be moved from the Chrome and Firefox browsers to Edge in order to take advantage of this feature, this is done for cybersecurity reasons only.