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Windows

What is Windows Defender Application Guard?

The Windows Defender Application Guard (for Edge) is designed to protect your Windows OS from malware and zero-day attacks. When enabled, the feature works by creating a new instance of the Edge browser. The new instance is created on the hardware level using Hyper-V with its own kernel and all the required elements for the Edge browser to run normally.

cve
According to Microsoft the new security protection mechanism helps against new Browser attacks and vulnerabilities. Picture Source: Microsoft Blog